Bump @testing-library/react from 11.2.5 to 11.2.6 (#15997)

Bump @testing-library/react from 11.2.5 to 11.2.6 (#15997)

Bumps [@testing-library/react](https://github.com/testing-library/react-testing-library) from 11.2.5 to 11.2.6.
- [Release notes](https://github.com/testing-library/react-testing-library/releases)
- [Changelog](https://github.com/testing-library/react-testing-library/blob/master/CHANGELOG.md)
- [Commits](https://github.com/testing-library/react-testing-library/compare/v11.2.5...v11.2.6)

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