Bump sigs.k8s.io/controller-runtime and k8s.io/*

[tomasaschan]

What this PR does / why we need it:

This ensures the library is compatible with the latest versions of sigs.k8s.io/controller-runtime and the matching versions of k8s.io/*. We need this internally to be able to make the matching version bumps in our controller implementations.

Which issue(s) this PR fixes:

It also tags a new version, which closes #407.

Special notes for your reviewer:

Unfortunately there is no version of k8s.io/apimachinery that supports both diff.StringDiff and diff.Diff so we have to simply bite the bullet and change the code, and also push forward.

As discussed in #407, I don't see the need to release a version of KDP for each version of sigs.k8s.io/controller-runtime we've missed; we can do that retroactively if anyone asks for it.

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[tomasaschan]

Superseded by #424