fix(deps): update react monorepo to v19

Author: renovate[bot]

client/defer/apollo-client/package.json

@@ -8,8 +8,8 @@
     "@testing-library/react": "13.4.0",
     "@testing-library/user-event": "14.6.1",
     "graphql": "16.10.0",
-    "react": "18.3.1",
-    "react-dom": "18.3.1",
+    "react": "19.0.0",
+    "react-dom": "19.0.0",
     "react-scripts": "5.0.1",
     "web-vitals": "2.1.4"
   },