fix(deps): update react monorepo to v19

Author: renovate[bot]

package-lock.json

@@ -42,8 +42,8 @@
     "classnames": "2.5.1",
     "core-js": "3.42.0",
     "date-fns": "4.1.0",
-    "react": "18.3.1",
-    "react-dom": "18.3.1",
+    "react": "19.1.0",
+    "react-dom": "19.1.0",
     "react-feather": "2.0.10",
     "react-markdown": "10.1.0",
     "react-router-dom": "7.5.2",