PRTG Redis Sensor 3.0.42

Bump StackExchange.Redis from 2.6.122 to 2.7.4

Bumps [StackExchange.Redis](https://github.com/StackExchange/StackExchange.Redis) from 2.6.122 to 2.7.4.
- [Release notes](https://github.com/StackExchange/StackExchange.Redis/releases)
- [Changelog](https://github.com/StackExchange/StackExchange.Redis/blob/main/docs/ReleaseNotes.md)
- [Commits](https://github.com/StackExchange/StackExchange.Redis/compare/2.6.122...2.7.4)

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

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