Bump tailwindcss from 4.2.0 to 4.2.1 in /web (#469)

Bumps
[tailwindcss](https://github.com/tailwindlabs/tailwindcss/tree/HEAD/packages/tailwindcss)
from 4.2.0 to 4.2.1.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/tailwindlabs/tailwindcss/releases">tailwindcss's
releases</a>.</em></p>
<blockquote>
<h2>v4.2.1</h2>
<h3>Fixed</h3>
<ul>
<li>Allow trailing dash in functional utility names for backwards
compatibility (<a
href="https://redirect.github.com/tailwindlabs/tailwindcss/pull/19696">#19696</a>)</li>
<li>Properly detect classes containing <code>.</code> characters within
curly braces in MDX files (<a
href="https://redirect.github.com/tailwindlabs/tailwindcss/pull/19711">#19711</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/tailwindlabs/tailwindcss/blob/main/CHANGELOG.md">tailwindcss's
changelog</a>.</em></p>
<blockquote>
<h2>[4.2.1] - 2026-02-23</h2>
<h3>Fixed</h3>
<ul>
<li>Allow trailing dash in functional utility names for backwards
compatibility (<a
href="https://redirect.github.com/tailwindlabs/tailwindcss/pull/19696">#19696</a>)</li>
<li>Properly detect classes containing <code>.</code> characters within
curly braces in MDX files (<a
href="https://redirect.github.com/tailwindlabs/tailwindcss/pull/19711">#19711</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="1dce64ee7e"><code>1dce64e</code></a>
4.2.1 (<a
href="https://github.com/tailwindlabs/tailwindcss/tree/HEAD/packages/tailwindcss/issues/19714">#19714</a>)</li>
<li><a
href="d15d92ca60"><code>d15d92c</code></a>
Allow trailing dash in functional utility names (<a
href="https://github.com/tailwindlabs/tailwindcss/tree/HEAD/packages/tailwindcss/issues/19696">#19696</a>)</li>
<li>See full diff in <a
href="https://github.com/tailwindlabs/tailwindcss/commits/v4.2.1/packages/tailwindcss">compare
view</a></li>
</ul>
</details>
<br />


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web/package.json

@@ -59,7 +59,7 @@
 		"sveltekit-superforms": "^2.29.1",
 		"tailwind-merge": "^3.3.1",
 		"tailwind-variants": "^0.2.1",
-		"tailwindcss": "^4.1.11",
+		"tailwindcss": "^4.2.1",
 		"tw-animate-css": "^1.3.6",
 		"typescript": "^5.9.2",
 		"typescript-eslint": "^8.39.1",