chore(deps): update react monorepo to v19

Author: renovate[bot]

package.json

@@ -20,8 +20,8 @@
     "algoliasearch": "^4.24.0",
     "instantsearch.js": "^4.75.3",
     "next": "canary",
-    "react": "^18.3.1",
-    "react-dom": "^18.3.1",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0",
     "react-instantsearch": "^7.13.6",
     "react-instantsearch-nextjs": "^0.3.16",
     "server-only": "^0.0.1",