chore(deps): update dependency tailwindcss to v4

Author: renovate[bot]

docs-app/package.json

@@ -106,7 +106,7 @@
     "qunit": "^2.19.1",
     "qunit-dom": "^3.0.0",
     "sync-pnpm": "workspace:*",
-    "tailwindcss": "^3.1.8",
+    "tailwindcss": "^4.0.0",
     "typescript": "^5.0.0",
     "webpack": "^5.75.0"
   },