Bump redis from 5.0.4 to 5.0.6

Bumps [redis](https://github.com/redis/redis-py) from 5.0.4 to 5.0.6.
- [Release notes](https://github.com/redis/redis-py/releases)
- [Changelog](https://github.com/redis/redis-py/blob/master/CHANGES)
- [Commits](redis/redis-py@v5.0.4...v5.0.6)

---
updated-dependencies:
- dependency-name: redis
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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