Bump @testing-library/jest-dom from 5.14.1 to 5.15.0 in /ui (#1456)

Bumps [@testing-library/jest-dom](https://github.com/testing-library/jest-dom) from 5.14.1 to 5.15.0.
- [Release notes](https://github.com/testing-library/jest-dom/releases)
- [Changelog](https://github.com/testing-library/jest-dom/blob/main/CHANGELOG.md)
- [Commits](https://github.com/testing-library/jest-dom/compare/v5.14.1...v5.15.0)

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

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ui/package.json

@@ -39,7 +39,7 @@
     "uuid": "^8.3.2"
   },
   "devDependencies": {
-    "@testing-library/jest-dom": "^5.14.1",
+    "@testing-library/jest-dom": "^5.15.0",
     "@testing-library/react": "^12.1.2",
     "@testing-library/react-hooks": "^7.0.2",
     "@testing-library/user-event": "^13.5.0",