Update to Kubernetes 1.28

[xrstf]

kcp-dev/kcp#3017 just got merged, so we should work on updating this fork to 1.28.

[kcp-ci-bot]

Issues go stale after 90d of inactivity.
After a furter 30 days, they will turn rotten.
Mark the issue as fresh with /remove-lifecycle stale.

If this issue is safe to close now please do so with /close.

/lifecycle stale

[embik]

/close

We are already on 1.29 now:

controller-runtime/go.mod

Line 26 in 607a854

k8s.io/api v0.29.0

So this is resolved.

[kcp-ci-bot]

@embik: Closing this issue.

In response to this:

/close

We are already on 1.29 now:

controller-runtime/go.mod

Line 26 in 607a854

k8s.io/api v0.29.0

So this is resolved.

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