Bump redis from 4.0.4 to 4.0.6 (#17957)

Bump redis from 4.0.4 to 4.0.6 (#17957)

Bumps [redis](https://github.com/redis/node-redis) from 4.0.4 to 4.0.6.
- [Release notes](https://github.com/redis/node-redis/releases)
- [Changelog](https://github.com/redis/node-redis/blob/master/CHANGELOG.md)
- [Commits](https://github.com/redis/node-redis/compare/redis@4.0.4...redis@4.0.6)

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

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