build(deps-dev): bump @testing-library/react-hooks from 7.0.2 to 8.0.0

Bumps [@testing-library/react-hooks](https://github.com/testing-library/react-hooks-testing-library) from 7.0.2 to 8.0.0.
- [Release notes](https://github.com/testing-library/react-hooks-testing-library/releases)
- [Changelog](https://github.com/testing-library/react-hooks-testing-library/blob/main/CHANGELOG.md)
- [Commits](https://github.com/testing-library/react-hooks-testing-library/compare/v7.0.2...v8.0.0)

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

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

plugins/techdocs-react/package.json

@@ -54,7 +54,7 @@
   },
   "devDependencies": {
     "@testing-library/react": "^12.1.3",
-    "@testing-library/react-hooks": "^7.0.2",
+    "@testing-library/react-hooks": "^8.0.0",
     "@backstage/test-utils": "^1.0.1-next.2",
     "@backstage/theme": "^0.2.15"
   },