Bump h2 from 0.3.15 to 0.3.17 in /cmd/pinniped-proxy (#6186)

Bumps [h2](https://github.com/hyperium/h2) from 0.3.15 to 0.3.17.
<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>v0.3.17</h2>
<h2>What's Changed</h2>
<ul>
<li>Add <code>Error::is_library()</code> method to check if the
originated inside <code>h2</code>.</li>
<li>Add <code>max_pending_accept_reset_streams(usize)</code> option to
client and server
builders.</li>
<li>Fix theoretical memory growth when receiving too many HEADERS and
then
RST_STREAM frames faster than an application can accept them off the
queue.
(CVE-2023-26964)</li>
</ul>
<h2>v0.3.16</h2>
<h2>What's Changed</h2>
<ul>
<li>Set <code>Protocol</code> extension on requests when received
Extended CONNECT requests.</li>
<li>Remove <code>B: Unpin + 'static</code> bound requiremented of
bufs</li>
<li>Fix releasing of frames when stream is finished, reducing memory
usage.</li>
<li>Fix panic when trying to send data and connection window is
available, but stream window is not.</li>
<li>Fix spurious wakeups when stream capacity is not available.</li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/vi"><code>@​vi</code></a> made their
first contribution in <a
href="https://redirect.github.com/hyperium/h2/pull/646">hyperium/h2#646</a></li>
<li><a
href="https://github.com/silence-coding"><code>@​silence-coding</code></a>
made their first contribution in <a
href="https://redirect.github.com/hyperium/h2/pull/651">hyperium/h2#651</a></li>
<li><a href="https://github.com/gtsiam"><code>@​gtsiam</code></a> made
their first contribution in <a
href="https://redirect.github.com/hyperium/h2/pull/649">hyperium/h2#649</a></li>
<li><a
href="https://github.com/howardjohn"><code>@​howardjohn</code></a> made
their first contribution in <a
href="https://redirect.github.com/hyperium/h2/pull/658">hyperium/h2#658</a></li>
<li><a href="https://github.com/cloneable"><code>@​cloneable</code></a>
made their first contribution in <a
href="https://redirect.github.com/hyperium/h2/pull/655">hyperium/h2#655</a></li>
<li><a href="https://github.com/aftersnow"><code>@​aftersnow</code></a>
made their first contribution in <a
href="https://redirect.github.com/hyperium/h2/pull/657">hyperium/h2#657</a></li>
<li><a href="https://github.com/vadim-eg"><code>@​vadim-eg</code></a>
made their first contribution in <a
href="https://redirect.github.com/hyperium/h2/pull/661">hyperium/h2#661</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>0.3.17 (April 13, 2023)</h1>
<ul>
<li>Add <code>Error::is_library()</code> method to check if the
originated inside <code>h2</code>.</li>
<li>Add <code>max_pending_accept_reset_streams(usize)</code> option to
client and server
builders.</li>
<li>Fix theoretical memory growth when receiving too many HEADERS and
then
RST_STREAM frames faster than an application can accept them off the
queue.
(CVE-2023-26964)</li>
</ul>
<h1>0.3.16 (February 27, 2023)</h1>
<ul>
<li>Set <code>Protocol</code> extension on requests when received
Extended CONNECT requests.</li>
<li>Remove <code>B: Unpin + 'static</code> bound requiremented of
bufs</li>
<li>Fix releasing of frames when stream is finished, reducing memory
usage.</li>
<li>Fix panic when trying to send data and connection window is
available, but stream window is not.</li>
<li>Fix spurious wakeups when stream capacity is not available.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/hyperium/h2/commit/af4bcacf6d3770e9e3dc10fdc631fc8c0bdd472b"><code>af4bcac</code></a>
v0.3.17</li>
<li><a
href="https://github.com/hyperium/h2/commit/d3f37e9fbad6608ba74419c355eb1892bd55d977"><code>d3f37e9</code></a>
feat: add <code>max_pending_accept_reset_streams(n)</code> options</li>
<li><a
href="https://github.com/hyperium/h2/commit/5bc8e72e5fcbd8ae2d3d9bc78a1c0ef0040bcc39"><code>5bc8e72</code></a>
fix: limit the amount of pending-accept reset streams</li>
<li><a
href="https://github.com/hyperium/h2/commit/8088ca658d90a3874fb6b136b85776424265295b"><code>8088ca6</code></a>
feat: add Error::is_library method</li>
<li><a
href="https://github.com/hyperium/h2/commit/481c31d5283bf32b90c83388c037494548934971"><code>481c31d</code></a>
chore: Use Cargo metadata for the MSRV build job</li>
<li><a
href="https://github.com/hyperium/h2/commit/d3d50ef8123f0a1b6d16faa2d9edc01418da7c00"><code>d3d50ef</code></a>
chore: Replace unmaintained/outdated GitHub Actions</li>
<li><a
href="https://github.com/hyperium/h2/commit/45b9bccdfcb26cfe9907123a1e975a22eb84c44f"><code>45b9bcc</code></a>
chore: set rust-version in Cargo.toml (<a
href="https://redirect.github.com/hyperium/h2/issues/664">#664</a>)</li>
<li><a
href="https://github.com/hyperium/h2/commit/b9dcd39915420ab1d9f4a8ad0f96c86af8f86558"><code>b9dcd39</code></a>
v0.3.16</li>
<li><a
href="https://github.com/hyperium/h2/commit/96caf4fca32fad92037e082b6b74220274faaf16"><code>96caf4f</code></a>
Add a message for EOF-related broken pipe errors (<a
href="https://redirect.github.com/hyperium/h2/issues/615">#615</a>)</li>
<li><a
href="https://github.com/hyperium/h2/commit/732319039ff6184076b339f6870746b6c7fed86f"><code>7323190</code></a>
Avoid spurious wakeups when stream capacity is not available (<a
href="https://redirect.github.com/hyperium/h2/issues/661">#661</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/hyperium/h2/compare/v0.3.15...v0.3.17">compare
view</a></li>
</ul>
</details>
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