build(deps): bump tailwindcss from 3.4.15 to 4.1.6

Bumps [tailwindcss](https://github.com/tailwindlabs/tailwindcss/tree/HEAD/packages/tailwindcss) from 3.4.15 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:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package.json

@@ -42,7 +42,7 @@
     "react-spinners": "^0.17.0",
     "remark-gfm": "^4.0.1",
     "sharp": "^0.34.0",
-    "tailwindcss": "3.4.15",
+    "tailwindcss": "4.1.6",
     "typescript": "5.8.3"
   }
 }