✨ Update to Kubernetes 1.26

[ncdc]

Summary

Add shutdown support to generated shared informer factories. This matches changes introduce upstream after our 1.24 rebase.

Related issue(s)

Part of https://github.com/kcp-dev/kcp/issues/2772

[ncdc]

/hold

We'll want to sequence getting the suite of 1.26 PRs merged and we're not ready for that yet.

[ncdc]

/approve

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ncdc

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[ncdc]

/unhold

[stevekuznetsov]

/lgtm