chore(integration): upgrade bundled-ui template to react 19

Author: jacekradko

integration/templates/next-app-router-bundled-ui/package.json

@@ -10,11 +10,11 @@
   },
   "dependencies": {
     "@types/node": "^20.12.12",
-    "@types/react": "18.3.12",
-    "@types/react-dom": "18.3.1",
+    "@types/react": "19.2.14",
+    "@types/react-dom": "19.2.3",
     "next": "^15.0.1",
-    "react": "18.3.1",
-    "react-dom": "18.3.1",
+    "react": "19.2.4",
+    "react-dom": "19.2.4",
     "typescript": "^5.7.3"
   },
   "engines": {