Bump eslint-plugin-testing-library from 6.4.0 to 7.0.0

Bumps [eslint-plugin-testing-library](https://github.com/testing-library/eslint-plugin-testing-library) from 6.4.0 to 7.0.0.
- [Release notes](https://github.com/testing-library/eslint-plugin-testing-library/releases)
- [Changelog](https://github.com/testing-library/eslint-plugin-testing-library/blob/main/.releaserc.json)
- [Commits](testing-library/eslint-plugin-testing-library@v6.4.0...v7.0.0)

---
updated-dependencies:
- dependency-name: eslint-plugin-testing-library
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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