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

Bumps [@testing-library/user-event](https://github.com/testing-library/user-event) from 13.5.0 to 14.6.1.
- [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...v14.6.1)

---
updated-dependencies:
- dependency-name: "@testing-library/user-event"
  dependency-version: 14.6.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

frontend/package-lock.json

@@ -11,7 +11,7 @@
     "@rjsf/utils": "^5.24.12",
     "@rjsf/validator-ajv8": "^5.24.7",
     "@testing-library/react": "^13.4.0",
-    "@testing-library/user-event": "^13.5.0",
+    "@testing-library/user-event": "^14.6.1",
     "ansi-to-html": "^0.7.2",
     "antd": "^5.24.2",
     "axios": "1.8.4",