Update dependency tailwindcss to v4

Author: renovate[bot]

calm-hub-ui/package.json

@@ -60,7 +60,7 @@
         "npm-force-resolutions": "^0.0.10",
         "postcss": "^8.4.49",
         "prettier": "^3.3.3",
-        "tailwindcss": "^3.4.17",
+        "tailwindcss": "^4.0.0",
         "typescript": "^5.5.3",
         "typescript-eslint": "^8.14.0",
         "vite": "^6.2.5",