Bump commonmarker from 0.23.4 to 0.23.6 in /docs (#2731)

Bumps [commonmarker](https://github.com/gjtorikian/commonmarker) from
0.23.4 to 0.23.6.
<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>v0.23.6</h2>
<h2>What's Changed</h2>
<p>This release includes two updates from the upstream
<code>cmark-gfm</code> library, namely:</p>
<ul>
<li><a href="https://github.com/github/cmark-gfm/releases">DoS
vulnerability in autolink extension</a> per <a
href="https://github.com/github/cmark-gfm/security/advisories/GHSA-cgh3-p57x-9q7q">GHSA-cgh3-p57x-9q7q</a></li>
<li><a
href="https://github.com/github/cmark-gfm/releases/tag/0.29.0.gfm.5">Added
<code>xmpp:</code> and <code>mailto:</code> support to the autolink
extension</a></li>
</ul>
</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>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="a8f8d76fbc"><code>a8f8d76</code></a>
Merge pull request <a
href="https://github-redirect.dependabot.com/gjtorikian/commonmarker/issues/190">#190</a>
from anticomputer/main</li>
<li><a
href="ac91634631"><code>ac91634</code></a>
💎 release 0.23.6</li>
<li><a
href="777fd3054b"><code>777fd30</code></a>
Update cmark-upstream to <a
href="https://github.com/github/cmark-gfm/commit/9d57d8a23">https://github.com/github/cmark-gfm/commit/9d57d8a23</a>...</li>
<li><a
href="7aaeb37e97"><code>7aaeb37</code></a>
Merge pull request <a
href="https://github-redirect.dependabot.com/gjtorikian/commonmarker/issues/188">#188</a>
from stevenlaidlaw/update-to-0290gfm5</li>
<li><a
href="795e628a40"><code>795e628</code></a>
Update cmark-upstream to <a
href="https://github.com/github/cmark-gfm/commit/0578e1e4f">https://github.com/github/cmark-gfm/commit/0578e1e4f</a>...</li>
<li><a
href="39d19d6530"><code>39d19d6</code></a>
Update cmark-upstream to <a
href="https://github.com/github/cmark-gfm/commit/766f161ef">https://github.com/github/cmark-gfm/commit/766f161ef</a>...</li>
<li><a
href="63b7bf89ee"><code>63b7bf8</code></a>
Update FUNDING.yml</li>
<li><a
href="558c7275b1"><code>558c727</code></a>
Bump to 0.23.5</li>
<li><a
href="41eee7265f"><code>41eee72</code></a>
lint</li>
<li><a
href="897e8ed07d"><code>897e8ed</code></a>
Merge pull request <a
href="https://github-redirect.dependabot.com/gjtorikian/commonmarker/issues/180">#180</a>
from lumaxis/main</li>
<li>Additional commits viewable in <a
href="https://github.com/gjtorikian/commonmarker/compare/v0.23.4...v0.23.6">compare
view</a></li>
</ul>
</details>
<br />


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docs/Gemfile.lock

@@ -14,7 +14,7 @@ GEM
       execjs
     coffee-script-source (1.11.1)
     colorator (1.1.0)
-    commonmarker (0.23.4)
+    commonmarker (0.23.6)
     concurrent-ruby (1.1.10)
     dnsruby (1.61.9)
       simpleidn (~> 0.1)