Update @google-cloud/datastore to the latest version 🚀 (material-comp…

…onents#4251)

## The devDependency [@google-cloud/datastore](https://github.com/googleapis/nodejs-datastore) was updated from `2.0.0` to `3.0.1`.
This version is **not covered** by your **current version range**.

If you don’t accept this pull request, your project will work just like it did before. However, you might be missing out on a bunch of new features, fixes and/or performance improvements from the dependency update.

---

<details>
<summary>Release Notes for v3.0.1</summary>

<p>01-15-2019 13:20 PST</p>
<h3>Bug fixes</h3>
<ul>
<li>fix: ship the build directory (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/300" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/300/hovercard">material-components#300</a>)</li>
</ul>
<h3>Internal / Testing Changes</h3>
<ul>
<li>build: check broken links in generated docs (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/292" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/292/hovercard">material-components#292</a>)</li>
</ul>
</details>

<details>
<summary>Commits</summary>
<p>The new version differs by 3 commits.</p>
<ul>
<li><a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/commit/401b2e1c03c1cb1340d1c7249a1f435dc17d74cb"><code>401b2e1</code></a> <code>Release v3.0.1 (material-components#301)</code></li>
<li><a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/commit/177b11b3819b98debcf157b040d282c2b9b8d9ca"><code>177b11b</code></a> <code>fix: ship the build directory (material-components#300)</code></li>
<li><a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/commit/70ea500726d7a48a768433703c94e9fbb7c53f9d"><code>70ea500</code></a> <code>build: check broken links in generated docs (material-components#292)</code></li>
</ul>
<p>See the <a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/compare/f839e581b0396b830cc3bae31d107f57414394d4...401b2e1c03c1cb1340d1c7249a1f435dc17d74cb">full diff</a></p>
</details>

---

<details>
<summary>Release Notes for v3.0.0</summary>

<p>01-14-2019 20:31 PST</p>
<p><strong>This release has breaking changes!</strong> The import style of this library has changed to be consistent with <a href="https://hacks.mozilla.org/2018/03/es-modules-a-cartoon-deep-dive/" rel="nofollow">es modules</a>.</p>
<h4>Old busted code</h4>
<div class="highlight highlight-source-js"><pre><span class="pl-k">const</span> <span class="pl-c1">Datastore</span> <span class="pl-k">=</span> <span class="pl-c1">require</span>(<span class="pl-s"><span class="pl-pds">'</span>@google-cloud/datastore<span class="pl-pds">'</span></span>)();
<span class="pl-c"><span class="pl-c">//</span> or...</span>
<span class="pl-k">const</span> <span class="pl-c1">Datastore</span> <span class="pl-k">=</span> <span class="pl-c1">require</span>(<span class="pl-s"><span class="pl-pds">'</span>@google-cloud/datastore<span class="pl-pds">'</span></span>);
<span class="pl-k">const</span> <span class="pl-c1">ds</span> <span class="pl-k">=</span> <span class="pl-k">new</span> <span class="pl-en">Datastore</span>();</pre></div>
<h4>New hot code</h4>
<div class="highlight highlight-source-js"><pre><span class="pl-k">const</span> {<span class="pl-c1">Datastore</span>} <span class="pl-k">=</span> <span class="pl-c1">require</span>(<span class="pl-s"><span class="pl-pds">'</span>@google-cloud/datastore<span class="pl-pds">'</span></span>);
<span class="pl-k">const</span> <span class="pl-c1">ds</span> <span class="pl-k">=</span> <span class="pl-k">new</span> <span class="pl-en">Datastore</span>();</pre></div>
<p>Please take care to update your imports accordingly!</p>
<h3>Dependencies</h3>
<ul>
<li>fix(deps): update dependency google-gax to ^0.23.0 (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/296" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/296/hovercard">material-components#296</a>)</li>
<li>fix(deps): update dependency google-gax to ^0.22.0 (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/248" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/248/hovercard">material-components#248</a>)</li>
<li>fix(deps): update dependency concat-stream to v2 (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/290" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/290/hovercard">material-components#290</a>)</li>
<li>refactor: remove async module usage (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/272" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/272/hovercard">material-components#272</a>)</li>
<li>fix(deps): update dependency through2 to v3 (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/237" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/237/hovercard">material-components#237</a>)</li>
<li>chore: remove unused dependencies (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/226" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/226/hovercard">material-components#226</a>)</li>
<li>fix(deps): update dependency google-proto-files to ^0.17.0 (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/210" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/210/hovercard">material-components#210</a>)</li>
</ul>
<h3>Documentation</h3>
<ul>
<li>fix(docs): fix namespace causing 404s (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/294" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/294/hovercard">material-components#294</a>)</li>
<li>fix(docs): remove unused long running operations types</li>
<li>docs: Update doc comment showing structure of entity (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/276" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/276/hovercard">material-components#276</a>)</li>
<li>docs: update readme badges (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/269" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/269/hovercard">material-components#269</a>)</li>
<li>refactor(samples): Samples to use async/await</li>
<li>docs: update auto-generated jsdoc comments (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/245" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/245/hovercard">material-components#245</a>)</li>
</ul>
<h3>Internal / Testing Changes</h3>
<ul>
<li>refactor: sprinkle some types about (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/291" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/291/hovercard">material-components#291</a>)</li>
<li>chore(deps): update dependency @types/sinon to v7.0.2 (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/289" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/289/hovercard">material-components#289</a>)</li>
<li>chore(deps): update dependency @types/sinon to v7 (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/286" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/286/hovercard">material-components#286</a>)</li>
<li>refactor(ts): enable lint and fix (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/287" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/287/hovercard">material-components#287</a>)</li>
<li>chore(build): inject yoshi automation key (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/285" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/285/hovercard">material-components#285</a>)</li>
<li>chore: update nyc and eslint configs (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/284" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/284/hovercard">material-components#284</a>)</li>
<li>chore: fix publish.sh permission +x (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/282" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/282/hovercard">material-components#282</a>)</li>
<li>fix(build): fix Kokoro release script (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/281" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/281/hovercard">material-components#281</a>)</li>
<li>build: add Kokoro configs for autorelease (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/280" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/280/hovercard">material-components#280</a>)</li>
<li>chore: always nyc report before calling codecov (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/275" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/275/hovercard">material-components#275</a>)</li>
<li>chore: nyc ignore build/test by default (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/274" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/274/hovercard">material-components#274</a>)</li>
<li>chore: update license file (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/271" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/271/hovercard">material-components#271</a>)</li>
<li>refactor: run gts fix (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/265" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/265/hovercard">material-components#265</a>)</li>
<li>chore(deps): update dependency typescript to ~3.2.0 (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/264" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/264/hovercard">material-components#264</a>)</li>
<li>fix(build): fix system key decryption (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/266" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/266/hovercard">material-components#266</a>)</li>
<li>refactor(samples): convert sample tests from ava to mocha (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/259" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/259/hovercard">material-components#259</a>)</li>
<li>fix: Pin @types/sinon to last compatible version (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/256" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/256/hovercard">material-components#256</a>)</li>
<li>chore: add synth.metadata (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/254" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/254/hovercard">material-components#254</a>)</li>
<li>refactor(ts): enable noImplicitThis (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/250" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/250/hovercard">material-components#250</a>)</li>
<li>chore(deps): update dependency gts to ^0.9.0 (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/247" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/247/hovercard">material-components#247</a>)</li>
<li>chore: update eslintignore config (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/246" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/246/hovercard">material-components#246</a>)</li>
<li>refactor(ts): use es module imports (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/244" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/244/hovercard">material-components#244</a>)</li>
<li>chore(deps): update dependency @google-cloud/nodejs-repo-tools to v3 (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/243" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/243/hovercard">material-components#243</a>)</li>
<li>chore: drop contributors from multiple places (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/241" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/241/hovercard">material-components#241</a>)</li>
<li>chore(deps): update dependency @types/is to v0.0.21 (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/240" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/240/hovercard">material-components#240</a>)</li>
<li>chore: use latest npm on Windows (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/239" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/239/hovercard">material-components#239</a>)</li>
<li>refactor(ts): convert to typescript (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/236" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/236/hovercard">material-components#236</a>)</li>
<li>chore: update CircleCI config (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/235" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/235/hovercard">material-components#235</a>)</li>
<li>chore: include build in eslintignore (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/232" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/232/hovercard">material-components#232</a>)</li>
<li>chore(deps): update dependency eslint-plugin-node to v8 (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/227" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/227/hovercard">material-components#227</a>)</li>
<li>chore: update issue templates (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/225" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/225/hovercard">material-components#225</a>)</li>
<li>chore: remove old issue template (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/223" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/223/hovercard">material-components#223</a>)</li>
<li>build: run tests on node11 (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/222" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/222/hovercard">material-components#222</a>)</li>
<li>chores(build): do not collect sponge.xml from windows builds (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/221" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/221/hovercard">material-components#221</a>)</li>
<li>chores(build): run codecov on continuous builds (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/220" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/220/hovercard">material-components#220</a>)</li>
<li>chore: update new issue template (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/219" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/219/hovercard">material-components#219</a>)</li>
<li>build: fix codecov uploading on Kokoro (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/213" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/213/hovercard">material-components#213</a>)</li>
<li>fix(deps): update dependency sinon to v7 (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/212" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/212/hovercard">material-components#212</a>)</li>
<li>Update kokoro config (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/207" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/207/hovercard">material-components#207</a>)</li>
<li>chore(deps): update dependency eslint-plugin-prettier to v3 (<a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/pull/206" data-hovercard-type="pull_request" data-hovercard-url="/googleapis/nodejs-datastore/pull/206/hovercard">material-components#206</a>)</li>
</ul>
</details>

<details>
<summary>Commits</summary>
<p>The new version differs by 54 commits.</p>
<ul>
<li><a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/commit/f839e581b0396b830cc3bae31d107f57414394d4"><code>f839e58</code></a> <code>Release v3.0.0 (material-components#298)</code></li>
<li><a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/commit/f0b665c0c2c8c2241af2c321212574fb78d63f4a"><code>f0b665c</code></a> <code>fix(deps): update dependency google-gax to ^0.23.0 (material-components#296)</code></li>
<li><a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/commit/f4e4410fa1f930ce196ee809d150c07c1e86875d"><code>f4e4410</code></a> <code>fix(docs): fix namespace causing 404s (material-components#294)</code></li>
<li><a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/commit/8608c7ee73b80a6e55f05cb3d687a9b32b1b2bd9"><code>8608c7e</code></a> <code>fix(docs): remove unused long running operations types</code></li>
<li><a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/commit/4bbe64ff09e28ffac063714def174860388f136c"><code>4bbe64f</code></a> <code>refactor: sprinkle some types about (material-components#291)</code></li>
<li><a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/commit/78d776f68cef67471a318a37dba08e6ad2e535a7"><code>78d776f</code></a> <code>fix(deps): update dependency concat-stream to v2 (material-components#290)</code></li>
<li><a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/commit/b3db31e4ca17684012efe47e0745d6927a587d5e"><code>b3db31e</code></a> <code>chore(deps): update dependency @types/sinon to v7.0.2 (material-components#289)</code></li>
<li><a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/commit/42d6f705b3ed39d25574c820dc92efc935fd92b1"><code>42d6f70</code></a> <code>refactor: remove async module usage (material-components#272)</code></li>
<li><a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/commit/97d847df17ff45947e495bc5e54f466106003186"><code>97d847d</code></a> <code>chore(deps): update dependency @types/sinon to v7 (material-components#286)</code></li>
<li><a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/commit/717b818e25f1b7bb014b614d0be234102804ed37"><code>717b818</code></a> <code>refactor(ts): enable lint and fix (material-components#287)</code></li>
<li><a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/commit/dcb7f651a4d9d3298f44eeb45f735b1713c073ff"><code>dcb7f65</code></a> <code>chore(build): inject yoshi automation key (material-components#285)</code></li>
<li><a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/commit/35a081d6e8bd146d05d04a1ea47ca7fd2dfc1c4b"><code>35a081d</code></a> <code>chore: update nyc and eslint configs (material-components#284)</code></li>
<li><a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/commit/4f91d8f7c91cc1d0360c84a5d4d7a0ede978addb"><code>4f91d8f</code></a> <code>chore: fix publish.sh permission +x (material-components#282)</code></li>
<li><a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/commit/1072247740128ae04380d2ca3cc57895a52e5208"><code>1072247</code></a> <code>fix(build): fix Kokoro release script (material-components#281)</code></li>
<li><a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/commit/b5579c28ab0c938f65e61be667ea65a8cacf4cf2"><code>b5579c2</code></a> <code>build: add Kokoro configs for autorelease (material-components#280)</code></li>
</ul>
<p>There are 54 commits in total.</p>
<p>See the <a href="https://urls.greenkeeper.io/googleapis/nodejs-datastore/compare/a0406f2e897e59944d9f82d9997955aa32f7df13...f839e581b0396b830cc3bae31d107f57414394d4">full diff</a></p>
</details>

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