Bump yaml from 2.4.5 to 2.6.0 (#244)

Bumps [yaml](https://github.com/eemeli/yaml) from 2.4.5 to 2.6.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/eemeli/yaml/releases">yaml's
releases</a>.</em></p>
<blockquote>
<h2>v2.6.0</h2>
<ul>
<li>Use a proper tag for <code>!!merge &lt;&lt;</code> keys (<a
href="https://redirect.github.com/eemeli/yaml/issues/580">#580</a>)</li>
<li>Add <code>stringKeys</code> parse option (<a
href="https://redirect.github.com/eemeli/yaml/issues/581">#581</a>)</li>
<li>Stringify a Document as a Document (<a
href="https://redirect.github.com/eemeli/yaml/issues/576">#576</a>)</li>
<li>Add sponsorship by <a
href="https://manifest.build/">Manifest</a></li>
</ul>
<h2>v2.5.1</h2>
<ul>
<li>Include range in flow sequence pair maps (<a
href="https://redirect.github.com/eemeli/yaml/issues/573">#573</a>)</li>
</ul>
<h2>v2.5.0</h2>
<ul>
<li>Add <code>--indent</code> option to CLI tool (<a
href="https://redirect.github.com/eemeli/yaml/issues/559">#559</a>, with
thanks to <a
href="https://github.com/danielbayley"><code>@​danielbayley</code></a>)</li>
<li>Require newline in all cases for props on block sequence (<a
href="https://redirect.github.com/eemeli/yaml/issues/557">#557</a>)</li>
<li>Always reset indentation in lexer on <code>...</code> (<a
href="https://redirect.github.com/eemeli/yaml/issues/558">#558</a>)</li>
<li>Ignore <code>minContentWidth</code> if greater than
<code>lineWidth</code> (<a
href="https://redirect.github.com/eemeli/yaml/issues/562">#562</a>)</li>
<li>Drop unused <code>Collection.maxFlowStringSingleLineLength</code>
(<a href="https://redirect.github.com/eemeli/yaml/issues/522">#522</a>,
<a
href="https://redirect.github.com/eemeli/yaml/issues/421">#421</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/eemeli/yaml/commit/808fba3cdef86b5d12085fd9c6343d47f168cbc3"><code>808fba3</code></a>
2.6.0</li>
<li><a
href="https://github.com/eemeli/yaml/commit/438688f357259c5569c3d5e17772f2a14cca3688"><code>438688f</code></a>
fix: Stringify a Document as a Document (fixes <a
href="https://redirect.github.com/eemeli/yaml/issues/576">#576</a>)</li>
<li><a
href="https://github.com/eemeli/yaml/commit/baaabd078aa77913aa1724bf41a397475eee7527"><code>baaabd0</code></a>
feat: Add stringKeys parse option (<a
href="https://redirect.github.com/eemeli/yaml/issues/581">#581</a>)</li>
<li><a
href="https://github.com/eemeli/yaml/commit/f2fa1083768637023395a46e19de59e9b5744d91"><code>f2fa108</code></a>
docs: Update Manifest logo (<a
href="https://redirect.github.com/eemeli/yaml/issues/582">#582</a>)</li>
<li><a
href="https://github.com/eemeli/yaml/commit/f088599a9ccd7d52c143fbbb02ac3f866fd60141"><code>f088599</code></a>
docs: Align logos using the restricted styling available for GitHub
readmes</li>
<li><a
href="https://github.com/eemeli/yaml/commit/dbb8a4258886300aa06ea7df37160f527e6c3a20"><code>dbb8a42</code></a>
docs: Fix manifest.png reference</li>
<li><a
href="https://github.com/eemeli/yaml/commit/28dc0a4688993cc8169c3e31d9771738dafaa240"><code>28dc0a4</code></a>
chore: Add sponsorship by Manifest</li>
<li><a
href="https://github.com/eemeli/yaml/commit/1491c20eb70ecc9532cb69348c1351657de9fe1a"><code>1491c20</code></a>
chore: Refresh lockfile</li>
<li><a
href="https://github.com/eemeli/yaml/commit/7a434f0713ddddf1e47a3cb764ea29bfe67a95ea"><code>7a434f0</code></a>
feat: Use a proper tag for !!merge &lt;&lt; keys (<a
href="https://redirect.github.com/eemeli/yaml/issues/580">#580</a>)</li>
<li><a
href="https://github.com/eemeli/yaml/commit/5adbb605b64094b57bc95cbc24587e6f36b3f9a8"><code>5adbb60</code></a>
2.5.1</li>
<li>Additional commits viewable in <a
href="https://github.com/eemeli/yaml/compare/v2.4.5...v2.6.0">compare
view</a></li>
</ul>
</details>
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