Bump redis and @types/redis

Bumps [redis](https://github.com/redis/node-redis) and [@types/redis](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/redis). These dependencies needed to be updated together.

Updates `redis` from 3.1.2 to 4.6.8
- [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/[email protected])

Updates `@types/redis` from 2.8.32 to 4.0.11
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/redis)

---
updated-dependencies:
- dependency-name: redis
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: "@types/redis"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>