Bump postcss from 8.4.25 to 8.4.27 in /frontend (#2387)

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.25 to
8.4.27.
<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>8.4.27</h2>
<ul>
<li>Fixed <code>Container</code> clone methods types.</li>
</ul>
<h2>8.4.26</h2>
<ul>
<li>Fixed clone methods types.</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>8.4.27</h2>
<ul>
<li>Fixed <code>Container</code> clone methods types.</li>
</ul>
<h2>8.4.26</h2>
<ul>
<li>Fixed clone methods types.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/postcss/postcss/commit/fb4bb8a5772739c87b8dcd2559ebcfeb7ab62483"><code>fb4bb8a</code></a>
Release 8.4.27 version</li>
<li><a
href="https://github.com/postcss/postcss/commit/16cddfdfcc561373829b38d826bcfda30356f563"><code>16cddfd</code></a>
Fix types</li>
<li><a
href="https://github.com/postcss/postcss/commit/c938a9a6cf1f3c3fecb10b977d6ab2d2a3a3e96a"><code>c938a9a</code></a>
Update dependencies</li>
<li><a
href="https://github.com/postcss/postcss/commit/a55c3e2837ff2de1e900294cbd57b328b5bc390e"><code>a55c3e2</code></a>
Fix container clone</li>
<li><a
href="https://github.com/postcss/postcss/commit/9b05f58f04fae6f3102fc9a8a56199b14ec84239"><code>9b05f58</code></a>
Release 8.4.26 version</li>
<li><a
href="https://github.com/postcss/postcss/commit/b5a3b35a41a8b4299c2ad2b1f8f50c2a9e49b1c0"><code>b5a3b35</code></a>
Better clone types</li>
<li><a
href="https://github.com/postcss/postcss/commit/7c638880b7a2ddaad6544417fa0276f4cf730eab"><code>7c63888</code></a>
Simplify docs</li>
<li><a
href="https://github.com/postcss/postcss/commit/18e8461b0ac6506a0531c3e845648af0ede97da0"><code>18e8461</code></a>
Update dependencies</li>
<li><a
href="https://github.com/postcss/postcss/commit/c42e20ba9db5b0ab6e44f22377ac7b50a38b30c6"><code>c42e20b</code></a>
Revert Node#clone() type</li>
<li><a
href="https://github.com/postcss/postcss/commit/548bc9476e932ea5eb28fbdef1b284f6109dff88"><code>548bc94</code></a>
Update plugin guide</li>
<li>Additional commits viewable in <a
href="https://github.com/postcss/postcss/compare/8.4.25...8.4.27">compare
view</a></li>
</ul>
</details>
<br />


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</details>

frontend/package.json

@@ -127,7 +127,7 @@
     "jest": "29.4.1",
     "jest-environment-jsdom": "29.5.0",
     "lint-staged": "13.2.2",
-    "postcss": "8.4.25",
+    "postcss": "8.4.27",
     "postcss-syntax": "0.36.2",
     "prettier": "2.8.8",
     "react-testing-library": "8.0.1",