build(deps-dev): Bump tailwindcss from 4.1.18 to 4.2.0

Bumps [tailwindcss](https://github.com/tailwindlabs/tailwindcss/tree/HEAD/packages/tailwindcss) from 4.1.18 to 4.2.0.
- [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/v4.2.0/packages/tailwindcss)

---
updated-dependencies:
- dependency-name: tailwindcss
  dependency-version: 4.2.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package.json

@@ -58,7 +58,7 @@
     "svelte-check": "4.4.1",
     "svelte-meta-tags": "4.5.0",
     "sveltekit-superforms": "2.29.1",
-    "tailwindcss": "4.1.18",
+    "tailwindcss": "4.2.0",
     "tslib": "2.8.1",
     "tsx": "4.21.0",
     "typescript": "5.9.3",