build(deps): Bump @testing-library/user-event in /app-frontend

Bumps [@testing-library/user-event](https://github.com/testing-library/user-event) from 13.5.0 to 14.5.2.
- [Release notes](https://github.com/testing-library/user-event/releases)
- [Changelog](https://github.com/testing-library/user-event/blob/main/CHANGELOG.md)
- [Commits](testing-library/user-event@v13.5.0...v14.5.2)

---
updated-dependencies:
- dependency-name: "@testing-library/user-event"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

app-frontend/package.json

@@ -5,7 +5,7 @@
   "dependencies": {
     "@testing-library/jest-dom": "^5.16.5",
     "@testing-library/react": "^13.4.0",
-    "@testing-library/user-event": "^13.5.0",
+    "@testing-library/user-event": "^14.5.2",
     "@types/jest": "^27.5.2",
     "@types/node": "^16.18.14",
     "@types/react": "^18.0.28",