Bumps [react-test-renderer](https://github.com/facebook/react/tree/HEAD/packages/react-test-renderer) from 16.11.0 to 16.12.0.
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/master/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/v16.12.0/packages/react-test-renderer

)

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