chore(deps-dev): bump postcss from 8.5.25 to 8.5.26 (#740)

Bumps [postcss](https://github.com/postcss/postcss) from 8.5.25 to
8.5.26.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/postcss/postcss/releases">postcss's
releases</a>.</em></p>
<blockquote>
<h2>8.5.26</h2>
<ul>
<li>Fixed <code>list.split()</code> regression (by <a
href="https://github.com/lazerg"><code>@​lazerg</code></a>).</li>
<li>Track symlinks in path protection in source map loading (by <a
href="https://github.com/drengir1"><code>@​drengir1</code></a>).</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/postcss/postcss/blob/main/CHANGELOG.md">postcss's
changelog</a>.</em></p>
<blockquote>
<h2>8.5.26</h2>
<ul>
<li>Fixed <code>list.split()</code> regression (by <a
href="https://github.com/lazerg"><code>@​lazerg</code></a>).</li>
<li>Track symlinks in path protection in source map loading (by <a
href="https://github.com/drengir1"><code>@​drengir1</code></a>).</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/postcss/postcss/commit/07b25773f38f77919f2af02ae3e8896b0deb5988"><code>07b2577</code></a>
Release 8.5.26 version</li>
<li><a
href="https://github.com/postcss/postcss/commit/47de6b9d7c55674cb326c5de7a734a740916defc"><code>47de6b9</code></a>
Update CI</li>
<li><a
href="https://github.com/postcss/postcss/commit/1493a83db7830912316512f55ab6064e7b7dd68e"><code>1493a83</code></a>
Fix Rule#selectors losing the empty selector (<a
href="https://redirect.github.com/postcss/postcss/issues/2129">#2129</a>)</li>
<li><a
href="https://github.com/postcss/postcss/commit/180db166e250d20e6761b224ae8d8134c9ba3e40"><code>180db16</code></a>
Typo</li>
<li><a
href="https://github.com/postcss/postcss/commit/29e9e00f132c96e46e1de295b816fe88a05354e7"><code>29e9e00</code></a>
Resolve symlinks before the previous-source-map containment check (<a
href="https://redirect.github.com/postcss/postcss/issues/2125">#2125</a>)</li>
<li><a
href="https://github.com/postcss/postcss/commit/3ba8f84703a884329b58abea579c3615684e0b7e"><code>3ba8f84</code></a>
Update dependencies</li>
<li><a
href="https://github.com/postcss/postcss/commit/87e72f671fd0d401c52822b5226c656632d92ec0"><code>87e72f6</code></a>
Update lock file</li>
<li><a
href="https://github.com/postcss/postcss/commit/caaeeb907e4a816c44a23b00b151882bd02325a1"><code>caaeeb9</code></a>
Upgrade nanoid to fix infinite loop on zero size (<a
href="https://redirect.github.com/postcss/postcss/issues/2124">#2124</a>)</li>
<li><a
href="https://github.com/postcss/postcss/commit/3609b6f4296952d0b5b9ddae42c8d73ee460c041"><code>3609b6f</code></a>
Explain how to type plugin options</li>
<li><a
href="https://github.com/postcss/postcss/commit/fbad419cbd01cd7a9a1a46413447f2cd9b3fce4a"><code>fbad419</code></a>
docs: show ESM and TypeScript plugin declaration (<a
href="https://redirect.github.com/postcss/postcss/issues/2118">#2118</a>)</li>
<li>See full diff in <a
href="https://github.com/postcss/postcss/compare/8.5.25...8.5.26">compare
view</a></li>
</ul>
</details>
<br />


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yarn.lock

@@ -19824,18 +19824,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"postcss@npm:^8, postcss@npm:^8.4.23, postcss@npm:^8.4.33, postcss@npm:^8.5.3":
-  version: 8.5.25
-  resolution: "postcss@npm:8.5.25"
-  dependencies:
-    nanoid: "npm:^3.3.16"
-    picocolors: "npm:^1.1.1"
-    source-map-js: "npm:^1.2.1"
-  checksum: 10c0/0a12c1e74b456c57122e81f684e02fd98ff4d57526f794d10c996df1147158808f5ae373ac82b988c8de6cbbaa82dbd7b13803b14f5dd3cf7cc6a42ccad5c9f2
-  languageName: node
-  linkType: hard
-
-"postcss@npm:^8.5.28":
+"postcss@npm:^8, postcss@npm:^8.4.23, postcss@npm:^8.4.33, postcss@npm:^8.5.28, postcss@npm:^8.5.3":
   version: 8.5.28
   resolution: "postcss@npm:8.5.28"
   dependencies: