Bump @testing-library/dom from 9.2.0 to 9.3.1

Bumps [@testing-library/dom](https://github.com/testing-library/dom-testing-library) from 9.2.0 to 9.3.1.
- [Release notes](https://github.com/testing-library/dom-testing-library/releases)
- [Changelog](https://github.com/testing-library/dom-testing-library/blob/main/CHANGELOG.md)
- [Commits](testing-library/dom-testing-library@v9.2.0...v9.3.1)

---
updated-dependencies:
- dependency-name: "@testing-library/dom"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

frontend/package.json

@@ -39,7 +39,7 @@
   "devDependencies": {
     "@next/bundle-analyzer": "^13.4.9",
     "@next/eslint-plugin-next": "^13.4.9",
-    "@testing-library/dom": "^9.2.0",
+    "@testing-library/dom": "^9.3.1",
     "@testing-library/jest-dom": "^5.16.5",
     "@testing-library/react": "^14.0.0",
     "@testing-library/user-event": "^14.4.3",