Update tailwindcss monorepo to v4.1.18

Author: renovate[bot]

apps/web/package.json

@@ -28,14 +28,14 @@
   },
   "devDependencies": {
     "@tailwindcss/forms": "0.5.10",
-    "@tailwindcss/postcss": "4.1.17",
+    "@tailwindcss/postcss": "4.1.18",
     "@types/node": "^24.10.1",
     "@types/react": "^19.2.7",
     "@types/react-dom": "^19.2.3",
     "eslint": "^9.39.1",
     "eslint-config-next": "16.0.7",
     "postcss": "8.5.6",
-    "tailwindcss": "4.1.17",
+    "tailwindcss": "4.1.18",
     "typescript": "5.9.3"
   }
 }