Bump tailwindcss from 3.4.17 to 4.0.0 in /site

Bumps [tailwindcss](https://github.com/tailwindlabs/tailwindcss/tree/HEAD/packages/tailwindcss) from 3.4.17 to 4.0.0.
- [Release notes](https://github.com/tailwindlabs/tailwindcss/releases)
- [Changelog](https://github.com/tailwindlabs/tailwindcss/blob/next/CHANGELOG.md)
- [Commits](https://github.com/tailwindlabs/tailwindcss/commits/v4.0.0/packages/tailwindcss)

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

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

package.json

@@ -22,6 +22,6 @@
   "homepage": "https://github.com/jwetzell/showbridge#readme",
   "devDependencies": {
     "http-server": "14.1.1",
-    "tailwindcss": "3.4.17"
+    "tailwindcss": "4.0.0"
   }
 }