chore(deps-dev): Bump @testing-library/jest-dom in /client

Bumps [@testing-library/jest-dom](https://github.com/testing-library/jest-dom) from 5.16.4 to 6.6.3.
- [Release notes](https://github.com/testing-library/jest-dom/releases)
- [Changelog](https://github.com/testing-library/jest-dom/blob/main/CHANGELOG.md)
- [Commits](testing-library/jest-dom@v5.16.4...v6.6.3)

---
updated-dependencies:
- dependency-name: "@testing-library/jest-dom"
  dependency-version: 6.6.3
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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Author: dependabot[bot]