Bump web3 from 5.11.0 to 5.12.1 in /requirements

[dependabot]

Bumps web3 from 5.11.0 to 5.12.1.

Changelog

Sourced from web3's changelog.

v5.12.1 (2020-09-02)

Misc

- `[#1708](https://github.com/ethereum/web3.py/issues/1708) <https://github.com/ethereum/web3.py/issues/1708>`__, `[#1709](https://github.com/ethereum/web3.py/issues/1709) <https://github.com/ethereum/web3.py/issues/1709>`__, `[#1715](https://github.com/ethereum/web3.py/issues/1715) <https://github.com/ethereum/web3.py/issues/1715>`__, `[#1722](https://github.com/ethereum/web3.py/issues/1722) <https://github.com/ethereum/web3.py/issues/1722>`__, `[#1724](https://github.com/ethereum/web3.py/issues/1724) <https://github.com/ethereum/web3.py/issues/1724>`__
v5.12.0 (2020-07-16)
Features

• Update web3.pm and ethpm module to EthPM v3 specification. ([#1652](https://github.com/ethereum/web3.py/issues/1652) <https://github.com/ethereum/web3.py/issues/1652>__)
• Allow consumer to initialize HttpProvider with their own requests.Session. This allows the HttpAdapter connection pool to be tuned as desired. ([#1469](https://github.com/ethereum/web3.py/issues/1469) <https://github.com/ethereum/web3.py/issues/1469>__)

Improved Documentation

- Use ethpm v3 packages in examples documentation. (`[#1683](https://github.com/ethereum/web3.py/issues/1683) <https://github.com/ethereum/web3.py/issues/1683>`__)
- Modernize the deploy contract example. (`[#1679](https://github.com/ethereum/web3.py/issues/1679) <https://github.com/ethereum/web3.py/issues/1679>`__)
- Add contribution guidelines and a code of conduct. (`[#1691](https://github.com/ethereum/web3.py/issues/1691) <https://github.com/ethereum/web3.py/issues/1691>`__)
Misc

- `[#1687](https://github.com/ethereum/web3.py/issues/1687) &lt;https://github.com/ethereum/web3.py/issues/1687&gt;`__
- `[#1690](https://github.com/ethereum/web3.py/issues/1690) &lt;https://github.com/ethereum/web3.py/issues/1690&gt;`__
v5.12.0-beta.3 (2020-07-15)
Bugfixes



Include ethpm-spec solidity examples in distribution. ([#1686](https://github.com/ethereum/web3.py/issues/1686) &lt;https://github.com/ethereum/web3.py/issues/1686&gt;__)

v5.12.0-beta.2 (2020-07-14)
Bugfixes

- Support ethpm-spec submodule in distributions. (`[#1682](https://github.com/ethereum/web3.py/issues/1682) &lt;https://github.com/ethereum/web3.py/issues/1682&gt;`__)
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</details>
<details>
<summary>Commits</summary>
<ul>

<li><a href="https://github.com/ethereum/web3.py/commit/bb9ccbba7e7231f2948a5ffc6e37ab06a23daf74&quot;&gt;&lt;code&gt;bb9ccbb&lt;/code&gt;&lt;/a> Bump version: 5.12.0 → 5.12.1</li>

<li><a href="https://github.com/ethereum/web3.py/commit/d92c9e02f28291f60eadb0bf4f1e17aab81f076d&quot;&gt;&lt;code&gt;d92c9e0&lt;/code&gt;&lt;/a> Compile release notes</li>

<li><a href="https://github.com/ethereum/web3.py/commit/b0a873801b3939301984137b588d051fb359bda4&quot;&gt;&lt;code&gt;b0a8738&lt;/code&gt;&lt;/a> Merge pull request <a href="https://github-redirect.dependabot.com/ethereum/web3.py/issues/1722&quot;&gt;#1722&lt;/a> from kclowes/eth-utils-194</li>

<li><a href="https://github.com/ethereum/web3.py/commit/7ebf760715d19fc0f0fcd107e66555df5e136879&quot;&gt;&lt;code&gt;7ebf760&lt;/code&gt;&lt;/a> Add newsfragment for eth-utils upgrade</li>

<li><a href="https://github.com/ethereum/web3.py/commit/cb3bae344197be5adec280fa0d4c4b2c7e866d2b&quot;&gt;&lt;code&gt;cb3bae3&lt;/code&gt;&lt;/a> Update eth-utils requirement to &gt;=1.9.5</li>

<li><a href="https://github.com/ethereum/web3.py/commit/ad4772f2a211e50325a555b526b9e75013bebfaf&quot;&gt;&lt;code&gt;ad4772f&lt;/code&gt;&lt;/a> Merge pull request <a href="https://github-redirect.dependabot.com/ethereum/web3.py/issues/1724&quot;&gt;#1724&lt;/a> from carver/upgrade-deps</li>

<li><a href="https://github.com/ethereum/web3.py/commit/706a31473480f9f662c76ef09ff220d0ee2a513b&quot;&gt;&lt;code&gt;706a314&lt;/code&gt;&lt;/a> Type fixups after eth-utils upgrade</li>

<li><a href="https://github.com/ethereum/web3.py/commit/c2b820eb1f7899ce7e873d558b8a6f5922cd5c97&quot;&gt;&lt;code&gt;c2b820e&lt;/code&gt;&lt;/a> Upgrade eth-account &amp; eth-tester for faster pyrlp</li>

<li><a href="https://github.com/ethereum/web3.py/commit/d431db5fcaa3d624e8361a99ae3317b82367fe65&quot;&gt;&lt;code&gt;d431db5&lt;/code&gt;&lt;/a> bump eth-utils version (<a href="https://github-redirect.dependabot.com/ethereum/web3.py/issues/1715&quot;&gt;#1715&lt;/a&gt;)&lt;/li>

<li><a href="https://github.com/ethereum/web3.py/commit/8bb0b56f65f1ab96b46db79f9956517ac628bd7b&quot;&gt;&lt;code&gt;8bb0b56&lt;/code&gt;&lt;/a> Merge pull request <a href="https://github-redirect.dependabot.com/ethereum/web3.py/issues/1708&quot;&gt;#1708&lt;/a> from kclowes/upgrade-integration-tests-geth-1918</li>

<li>Additional commits viewable in <a href="https://github.com/ethereum/web3.py/compare/v5.11.0...v5.12.1&quot;&gt;compare view</a></li>

</ul>

</details>
<br />



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[dependabot]

Superseded by #6.