fix(deps): update react monorepo to v19 (#135)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

example/react-app/package-lock.json

@@ -4,8 +4,8 @@
   "private": true,
   "dependencies": {
     "did-resolver": "4.1.0",
-    "react": "18.2.0",
-    "react-dom": "18.2.0",
+    "react": "19.0.0",
+    "react-dom": "19.0.0",
     "react-scripts": "5.0.1",
     "web-did-resolver": "../../"
   },