Bump react-dev-utils from 11.0.1 to 11.0.4 in /example

Bumps [react-dev-utils](https://github.com/facebook/create-react-app/tree/HEAD/packages/react-dev-utils) from 11.0.1 to 11.0.4.
- [Release notes](https://github.com/facebook/create-react-app/releases)
- [Changelog](https://github.com/facebook/create-react-app/blob/master/CHANGELOG-1.x.md)
- [Commits](https://github.com/facebook/create-react-app/commits/HEAD/packages/react-dev-utils)

Signed-off-by: dependabot[bot] <support@github.com>

example/package.json

@@ -9,7 +9,7 @@
     "prop-types": "^15.6.2",
     "react": "^16.4.1",
     "react-dom": "^16.4.1",
-    "react-scripts": "^5.0.1"
+    "react-scripts": "^4.0.1"
   },
   "scripts": {
     "start": "react-scripts start",