Merge pull request #333 from chrisdoherty4/feature/manual-release-wor…

…kflow

Merge pull request #305 from chrisdoherty4/v0.11

Use controller-runtime's cluster instead of manager (#256)

## Summary

Hegel originally integrated with Kubernetes by using a tink repo defined client that handled the client construction for a service. The implementation leveraged the controller-runtime manager data structure that comes with a lot more than whats needed by a service. Consequently, it needs to mute features such as metrics endpoints etc.

This change switches to the cluster object which is much lighter weight and focus' on representing a cluster (with caching of obects) instead of a fully fledged controller manager.

## Other notes

`go mod tidy` cleaned up a bunch of dependencies probably left from the Go v1.20 update.

## Issues

Closes #195