Bump postcss from 8.4.27 to 8.4.28 (#83)

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.27 to
8.4.28.
<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>8.4.28</h2>
<ul>
<li>Fixed <code>Root.source.end</code> for better source map (by <a
href="https://github.com/romainmenke"><code>@​romainmenke</code></a>).</li>
<li>Fixed <code>Result.root</code> types when <code>process()</code> has
no parser.</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>8.4.28</h2>
<ul>
<li>Fixed <code>Root.source.end</code> for better source map (by Romain
Menke).</li>
<li>Fixed <code>Result.root</code> types when <code>process()</code> has
no parser.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/postcss/postcss/commit/b0efcc0bc5aee44651a97cd648f66448d9bb3d3f"><code>b0efcc0</code></a>
Release 8.4.28 version</li>
<li><a
href="https://github.com/postcss/postcss/commit/33aca818f14fbbf722d8f97accb3712a9bc59cbd"><code>33aca81</code></a>
Fix tests</li>
<li><a
href="https://github.com/postcss/postcss/commit/b3528618a9128bd9f631b044db511238f19bcc96"><code>b352861</code></a>
Merge pull request <a
href="https://redirect.github.com/postcss/postcss/issues/1872">#1872</a>
from romainmenke/add-source.end-to-root-nodes--compa...</li>
<li><a
href="https://github.com/postcss/postcss/commit/1bcc28001a90245f8cc074e04ded009436eb93d8"><code>1bcc280</code></a>
add <code>source.end</code> to <code>Root</code> nodes</li>
<li><a
href="https://github.com/postcss/postcss/commit/ec034e4e4f262c9331d3e87b71aae20cdc76242f"><code>ec034e4</code></a>
Merge pull request <a
href="https://redirect.github.com/postcss/postcss/issues/1871">#1871</a>
from RiadhAdrani/main</li>
<li><a
href="https://github.com/postcss/postcss/commit/6222d3d66d957d2ba6eae9b41c837f3503943cc0"><code>6222d3d</code></a>
chore: add <code>postcss-plugin-ignore-file</code> to plugins.md</li>
<li><a
href="https://github.com/postcss/postcss/commit/7d51976a7eb031ac2b31670eefcf2981bcff25ec"><code>7d51976</code></a>
Cast Result.root type from process() options</li>
<li><a
href="https://github.com/postcss/postcss/commit/0ef29c2d23aee7ca3a7eccad8a03256db40d13b0"><code>0ef29c2</code></a>
Update dependecnies</li>
<li><a
href="https://github.com/postcss/postcss/commit/a0a82d3530ce7dfbfe1f12aa76c20f1b3f95eb7c"><code>a0a82d3</code></a>
Merge pull request <a
href="https://redirect.github.com/postcss/postcss/issues/1867">#1867</a>
from strarsis/add-postcss-baseurl-plugin</li>
<li><a
href="https://github.com/postcss/postcss/commit/510d0a5fb87623d54b5d72d16a0942bfbea1acdc"><code>510d0a5</code></a>
Add <code>postcss-urlrebase</code> plugin to plugins page.</li>
<li>Additional commits viewable in <a
href="https://github.com/postcss/postcss/compare/8.4.27...8.4.28">compare
view</a></li>
</ul>
</details>
<br />


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package.json

@@ -3,7 +3,7 @@
     "@netlify/plugin-lighthouse": "^5.0.0",
     "autoprefixer": "^10.4.15",
     "netlify-plugin-hugo-cache-resources": "^0.2.1",
-    "postcss": "^8.4.27",
+    "postcss": "^8.4.28",
     "postcss-cli": "^10.0.0",
     "postcss-color-mod-function": "^3.0.3"
   }