Bump groupdate from 5.1.0 to 5.2.1
Bump groupdate from 5.1.0 to 5.2.1

Bumps [groupdate](https://github.com/ankane/groupdate) from 5.1.0 to 5.2.1.
- [Release notes](https://github.com/ankane/groupdate/releases)
- [Changelog](https://github.com/ankane/groupdate/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ankane/groupdate/compare/v5.1.0...v5.2.1)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
ophrescue/RescueRails,ophrescue/RescueRails,ophrescue/RescueRails,ophrescue/RescueRails