Bumps [redis](https://github.com/redis/redis-rb) from 4.1.1 to 4.1.2.
- [Release notes](https://github.com/redis/redis-rb/releases)
- [Changelog](https://github.com/redis/redis-rb/blob/master/CHANGELOG.md)
- [Commits](https://github.com/redis/redis-rb/compare/v4.1.1...v4.1.2)