Bump @testing-library/react from 14.3.1 to 15.0.6 in /frontend

Bumps [@testing-library/react](https://github.com/testing-library/react-testing-library) from 14.3.1 to 15.0.6.
- [Release notes](https://github.com/testing-library/react-testing-library/releases)
- [Changelog](https://github.com/testing-library/react-testing-library/blob/main/CHANGELOG.md)
- [Commits](testing-library/react-testing-library@v14.3.1...v15.0.6)

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

Signed-off-by: dependabot[bot] <[email protected]>

frontend/package.json

@@ -4,7 +4,7 @@
 	"private": true,
 	"dependencies": {
 		"@testing-library/jest-dom": "^6.4.2",
-		"@testing-library/react": "^14.2.1",
+		"@testing-library/react": "^15.0.6",
 		"@testing-library/user-event": "^14.5.2",
 		"d3": "^7.9.0",
 		"http-proxy-middleware": "^3.0.0",