Bump commonmarker from 0.23.7 to 0.23.9 in /docs (#3054)

Bumps [commonmarker](https://github.com/gjtorikian/commonmarker) from
0.23.7 to 0.23.9.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/gjtorikian/commonmarker/releases">commonmarker's
releases</a>.</em></p>
<blockquote>
<h2>v0.23.9</h2>
<h2>What's Changed</h2>
<ul>
<li>Update to 0.29.0.gfm.11 by <a
href="https://github.com/anticomputer"><code>@​anticomputer</code></a>
in <a
href="https://redirect.github.com/gjtorikian/commonmarker/pull/236">gjtorikian/commonmarker#236</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/gjtorikian/commonmarker/compare/v0.23.8...v0.23.9">https://github.com/gjtorikian/commonmarker/compare/v0.23.8...v0.23.9</a></p>
<h2>v0.23.8</h2>
<h2>What's Changed</h2>
<ul>
<li>Update cmark-upstream to <code>0.29.0.gfm.9</code> by <a
href="https://github.com/smockle"><code>@​smockle</code></a> in <a
href="https://redirect.github.com/gjtorikian/commonmarker/pull/227">gjtorikian/commonmarker#227</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/smockle"><code>@​smockle</code></a> made
their first contribution in <a
href="https://redirect.github.com/gjtorikian/commonmarker/pull/227">gjtorikian/commonmarker#227</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/gjtorikian/commonmarker/compare/v0.23.7...v0.23.8">https://github.com/gjtorikian/commonmarker/compare/v0.23.7...v0.23.8</a></p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/gjtorikian/commonmarker/blob/main/CHANGELOG.md">commonmarker's
changelog</a>.</em></p>
<blockquote>
<h1>Changelog</h1>
<h2><a
href="https://github.com/gjtorikian/commonmarker/tree/v1.0.0.pre9">v1.0.0.pre9</a>
(2023-03-28)</h2>
<p><a
href="https://github.com/gjtorikian/commonmarker/compare/v1.0.0.pre8...v1.0.0.pre9">Full
Changelog</a></p>
<p><strong>Merged pull requests:</strong></p>
<ul>
<li>Updates from upstream <a
href="https://redirect.github.com/gjtorikian/commonmarker/pull/235">#235</a>
(<a href="https://github.com/gjtorikian">gjtorikian</a>)</li>
<li>Bump comrak from 0.16.0 to 0.17.1 <a
href="https://redirect.github.com/gjtorikian/commonmarker/pull/234">#234</a>
(<a href="https://github.com/apps/dependabot">dependabot[bot]</a>)</li>
<li>Bump magnus from 0.5.1 to 0.5.2 <a
href="https://redirect.github.com/gjtorikian/commonmarker/pull/233">#233</a>
(<a href="https://github.com/apps/dependabot">dependabot[bot]</a>)</li>
<li>Add ability to load <code>tmtheme</code>s from a folder <a
href="https://redirect.github.com/gjtorikian/commonmarker/pull/232">#232</a>
(<a href="https://github.com/gjtorikian">gjtorikian</a>)</li>
<li>Bump magnus from 0.5.0 to 0.5.1 <a
href="https://redirect.github.com/gjtorikian/commonmarker/pull/231">#231</a>
(<a href="https://github.com/apps/dependabot">dependabot[bot]</a>)</li>
<li>Bump magnus from 0.4.4 to 0.5.0 <a
href="https://redirect.github.com/gjtorikian/commonmarker/pull/230">#230</a>
(<a href="https://github.com/apps/dependabot">dependabot[bot]</a>)</li>
<li>Test the new integrated rb-sys <a
href="https://redirect.github.com/gjtorikian/commonmarker/pull/228">#228</a>
(<a href="https://github.com/gjtorikian">gjtorikian</a>)</li>
</ul>
<h2><a
href="https://github.com/gjtorikian/commonmarker/tree/v1.0.0.pre8">v1.0.0.pre8</a>
(2023-03-09)</h2>
<p><a
href="https://github.com/gjtorikian/commonmarker/compare/v0.23.8...v1.0.0.pre8">Full
Changelog</a></p>
<p><strong>Closed issues:</strong></p>
<ul>
<li>Something changed in how header anchors are named in the output HTML
<a
href="https://redirect.github.com/gjtorikian/commonmarker/issues/229">#229</a></li>
<li>Problem with CommonMarker on an Azure VM <a
href="https://redirect.github.com/gjtorikian/commonmarker/issues/226">#226</a></li>
</ul>
<h2><a
href="https://github.com/gjtorikian/commonmarker/tree/v0.23.8">v0.23.8</a>
(2023-01-31)</h2>
<p><a
href="https://github.com/gjtorikian/commonmarker/compare/v1.0.0.pre7...v0.23.8">Full
Changelog</a></p>
<h2><a
href="https://github.com/gjtorikian/commonmarker/tree/v1.0.0.pre7">v1.0.0.pre7</a>
(2023-01-26)</h2>
<p><a
href="https://github.com/gjtorikian/commonmarker/compare/v0.23.7...v1.0.0.pre7">Full
Changelog</a></p>
<p><strong>Merged pull requests:</strong></p>
<ul>
<li>Bump comrak from 0.15.0 to 0.16.0 <a
href="https://redirect.github.com/gjtorikian/commonmarker/pull/225">#225</a>
(<a href="https://github.com/apps/dependabot">dependabot[bot]</a>)</li>
<li>Change <code>unsafe_</code> to <code>unsafe</code> <a
href="https://redirect.github.com/gjtorikian/commonmarker/pull/220">#220</a>
(<a href="https://github.com/gjtorikian">gjtorikian</a>)</li>
<li>Clarify syntax highlighter plugin usage in README <a
href="https://redirect.github.com/gjtorikian/commonmarker/pull/218">#218</a>
(<a href="https://github.com/DannyBen">DannyBen</a>)</li>
<li>Fix a couple of misleading README points <a
href="https://redirect.github.com/gjtorikian/commonmarker/pull/215">#215</a>
(<a href="https://github.com/DannyBen">DannyBen</a>)</li>
<li>remove gemspec <a
href="https://redirect.github.com/gjtorikian/commonmarker/pull/214">#214</a>
(<a href="https://github.com/gjtorikian">gjtorikian</a>)</li>
<li>Add shortcodes/emoji <a
href="https://redirect.github.com/gjtorikian/commonmarker/pull/210">#210</a>
(<a href="https://github.com/gjtorikian">gjtorikian</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="42cfc90251"><code>42cfc90</code></a>
Merge pull request <a
href="https://redirect.github.com/gjtorikian/commonmarker/issues/236">#236</a>
from anticomputer/update-to-0.29.0.gfm.10</li>
<li><a
href="d793fbf451"><code>d793fbf</code></a>
Update cmark-upstream to <a
href="https://github.com/github/cmark-gfm/commit/1e230827a">https://github.com/github/cmark-gfm/commit/1e230827a</a>...</li>
<li><a
href="4e4588f2e0"><code>4e4588f</code></a>
Update Makefile for export header consolidation</li>
<li><a
href="2eb8ca8f2f"><code>2eb8ca8</code></a>
Update cmark-upstream to <a
href="https://github.com/github/cmark-gfm/commit/c8dcdc71c">https://github.com/github/cmark-gfm/commit/c8dcdc71c</a>...</li>
<li><a
href="bbb49db722"><code>bbb49db</code></a>
HtmlRenderer: don't nest &lt;strong&gt;</li>
<li><a
href="f303e6bae7"><code>f303e6b</code></a>
💎 release 0.23.9</li>
<li><a
href="d6fe4c8be4"><code>d6fe4c8</code></a>
Update cmark-upstream to <a
href="https://github.com/github/cmark-gfm/commit/dcf6b3862">https://github.com/github/cmark-gfm/commit/dcf6b3862</a>...</li>
<li><a
href="94c0af96f0"><code>94c0af9</code></a>
Merge pull request <a
href="https://redirect.github.com/gjtorikian/commonmarker/issues/227">#227</a>
from gjtorikian/update-to-0.29.0.gfm.9</li>
<li><a
href="5249f70a97"><code>5249f70</code></a>
💎 release 0.23.8</li>
<li><a
href="85c205798f"><code>85c2057</code></a>
Added aria-label changes to test-footnotes.rb</li>
<li>Additional commits viewable in <a
href="https://github.com/gjtorikian/commonmarker/compare/v0.23.7...v0.23.9">compare
view</a></li>
</ul>
</details>
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docs/Gemfile.lock

@@ -14,7 +14,7 @@ GEM
       execjs
     coffee-script-source (1.11.1)
     colorator (1.1.0)
-    commonmarker (0.23.7)
+    commonmarker (0.23.9)
     concurrent-ruby (1.2.0)
     dnsruby (1.61.9)
       simpleidn (~> 0.1)