chore(deps): Bump h2 from 0.3.19 to 0.3.20 (vectordotdev#17767)

Bumps [h2](https://github.com/hyperium/h2) from 0.3.19 to 0.3.20.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/hyperium/h2/releases">h2's
releases</a>.</em></p>
<blockquote>
<h2>v0.3.20</h2>
<h2>Bug Fixes</h2>
<ul>
<li>Fix panic if a server received a request with a <code>:status</code>
pseudo header in the 1xx range. (<a
href="https://redirect.github.com/hyperium/h2/issues/695">#695</a>)</li>
<li>Fix panic if a reset stream had pending push promises that were more
than allowed. (<a
href="https://redirect.github.com/hyperium/h2/issues/685">#685</a>)</li>
<li>Fix potential flow control overflow by subtraction, instead
returning a connection error. (<a
href="https://redirect.github.com/hyperium/h2/issues/692">#692</a>)</li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/f0rki"><code>@​f0rki</code></a> made
their first contribution in <a
href="https://redirect.github.com/hyperium/h2/pull/690">hyperium/h2#690</a></li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/hyperium/h2/blob/master/CHANGELOG.md">h2's
changelog</a>.</em></p>
<blockquote>
<h1>0.3.20 (June 26, 2023)</h1>
<ul>
<li>Fix panic if a server received a request with a <code>:status</code>
pseudo header in the 1xx range.</li>
<li>Fix panic if a reset stream had pending push promises that were more
than allowed.</li>
<li>Fix potential flow control overflow by subtraction, instead
returning a connection error.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/hyperium/h2/commit/6a75f232330374d5f329aaae91afc2dee7ed2b1f"><code>6a75f23</code></a>
v0.3.20</li>
<li><a
href="https://github.com/hyperium/h2/commit/0189722fd64d3cb5acd9764fdb85bb9a95232ea8"><code>0189722</code></a>
Fix for a fuzzer-discovered integer underflow of the flow control window
size...</li>
<li><a
href="https://github.com/hyperium/h2/commit/478f7b9889e9d8d53756558cca45cebd68aeaea0"><code>478f7b9</code></a>
Fix for invalid header panic corrected (<a
href="https://redirect.github.com/hyperium/h2/issues/695">#695</a>)</li>
<li><a
href="https://github.com/hyperium/h2/commit/864430c5dd453b70c29bb3d058e81876858380f4"><code>864430c</code></a>
Enabled clippy in CI and ran <code>clippy --fix</code></li>
<li><a
href="https://github.com/hyperium/h2/commit/972fb6f19ff195f9ea3920b40c862c60b898e791"><code>972fb6f</code></a>
chore: add funding file</li>
<li><a
href="https://github.com/hyperium/h2/commit/97bc3e36cf299e4e064653ced3352fc82a9cea70"><code>97bc3e3</code></a>
hammer test requires a new tokio feature</li>
<li><a
href="https://github.com/hyperium/h2/commit/66c36c4edb04d8f75ca66b9199546308fe089c0d"><code>66c36c4</code></a>
fix panic on receiving invalid headers frame by making the
<code>take_request</code> fun...</li>
<li><a
href="https://github.com/hyperium/h2/commit/04e6398bfe0cd9cb9590bc198c0921ac6441aea9"><code>04e6398</code></a>
fix: panicked when a reset stream would decrement twice</li>
<li>See full diff in <a
href="https://github.com/hyperium/h2/compare/v0.3.19...v0.3.20">compare
view</a></li>
</ul>
</details>
<br />


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Cargo.toml

@@ -256,7 +256,7 @@ futures-util = { version = "0.3.28", default-features = false }
 glob = { version = "0.3.1", default-features = false }
 governor = { version = "0.5.1", default-features = false, features = ["dashmap", "jitter", "std"], optional = true }
 grok = { version = "2.0.0", default-features = false, optional = true }
-h2 = { version = "0.3.19", default-features = false, optional = true }
+h2 = { version = "0.3.20", default-features = false, optional = true }
 hash_hasher = { version = "2.0.0", default-features = false }
 hashbrown = { version = "0.14.0", default-features = false, optional = true, features = ["ahash"] }
 headers = { version = "0.3.8", default-features = false }