Bump tailwindcss from 3.4.17 to 4.1.6

Bumps [tailwindcss](https://github.com/tailwindlabs/tailwindcss/tree/HEAD/packages/tailwindcss) from 3.4.17 to 4.1.6.
- [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/v4.1.6/packages/tailwindcss)

---
updated-dependencies:
- dependency-name: tailwindcss
  dependency-version: 4.1.6
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package-lock.json

@@ -84,7 +84,7 @@
     "gh-pages": "^6.1.1",
     "lighthouse": "^12.2.2",
     "postcss": "^8.4.47",
-    "tailwindcss": "^3.4.12"
+    "tailwindcss": "^4.1.6"
   },
   "browserslist": {
     "production": [