⬆ Bump tailwindcss from 4.2.0 to 4.2.1 (#2226)

Bumps [tailwindcss](https://github.com/tailwindlabs/tailwindcss/tree/HEAD/packages/tailwindcss) from 4.2.0 to 4.2.1.
- [Release notes](https://github.com/tailwindlabs/tailwindcss/releases)
- [Changelog](https://github.com/tailwindlabs/tailwindcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/tailwindlabs/tailwindcss/commits/v4.2.1/packages/tailwindcss)

---
updated-dependencies:
- dependency-name: tailwindcss
  dependency-version: 4.2.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

frontend/package.json

@@ -45,7 +45,7 @@
     "react-icons": "^5.5.0",
     "sonner": "^2.0.7",
     "tailwind-merge": "^3.4.0",
-    "tailwindcss": "^4.2.0",
+    "tailwindcss": "^4.2.1",
     "zod": "^4.3.6"
   },
   "devDependencies": {