Bump ioredis from 4.27.2 to 4.28.0

Bumps [ioredis](https://github.com/luin/ioredis) from 4.27.2 to 4.28.0.
- [Release notes](https://github.com/luin/ioredis/releases)
- [Changelog](https://github.com/luin/ioredis/blob/master/Changelog.md)
- [Commits](redis/ioredis@v4.27.2...v4.28.0)

---
updated-dependencies:
- dependency-name: ioredis
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]