Update react monorepo to v19

Author: renovate[bot]

package.json

@@ -18,8 +18,8 @@
     "framer-motion": "^11.3.30",
     "lucide-react": "^0.435.0",
     "next": "16.2.3",
-    "react": "^18",
-    "react-dom": "^18",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0",
     "sass": "^1.84.0",
     "tailwind-merge": "^2.5.2",
     "tailwindcss-animate": "^1.0.7"