Bump autoprefixer from 10.4.18 to 10.4.19 in /frontend (#3144)

Bumps [autoprefixer](https://github.com/postcss/autoprefixer) from
10.4.18 to 10.4.19.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/postcss/autoprefixer/releases">autoprefixer's
releases</a>.</em></p>
<blockquote>
<h2>10.4.19</h2>
<ul>
<li>Removed <code>end value has mixed support, consider using
flex-end</code> warning since <code>end</code>/<code>start</code> now
have good support.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/postcss/autoprefixer/blob/main/CHANGELOG.md">autoprefixer's
changelog</a>.</em></p>
<blockquote>
<h2>10.4.19</h2>
<ul>
<li>Removed <code>end value has mixed support, consider using
flex-end</code> warning
since <code>end</code>/<code>start</code> now have good support.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/postcss/autoprefixer/commit/8060e33a78f39759f32781dd3518dae90740dc38"><code>8060e33</code></a>
Release 10.4.19 version</li>
<li><a
href="https://github.com/postcss/autoprefixer/commit/fe7bae45970d38eee86c4d26e5f19fa100df3039"><code>fe7bae4</code></a>
Remove end→flex-end warning</li>
<li><a
href="https://github.com/postcss/autoprefixer/commit/5f6f362a1ebca975777ffcb0dc14b1ea5fb04def"><code>5f6f362</code></a>
Update dependencies</li>
<li><a
href="https://github.com/postcss/autoprefixer/commit/13a86df5abf9cf66d298ff75df3faa9f4d0eb07c"><code>13a86df</code></a>
Move to flat ESLint config</li>
<li><a
href="https://github.com/postcss/autoprefixer/commit/b3e0579452b6ce164c26ecb4999e6f99fff5563c"><code>b3e0579</code></a>
Update dependencies</li>
<li>See full diff in <a
href="https://github.com/postcss/autoprefixer/compare/10.4.18...10.4.19">compare
view</a></li>
</ul>
</details>
<br />


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frontend/package.json

@@ -82,7 +82,7 @@
 		"@types/react-router-hash-link": "^2.4.6",
 		"@types/react-scroll": "^1.8.9",
 		"@types/react-table": "^7.7.15",
-		"autoprefixer": "^10.4.16",
+		"autoprefixer": "^10.4.19",
 		"cross-env": "^7.0.3",
 		"postcss": "^8.4.31",
 		"tailwindcss": "^3.3.5",