Bump Kustomize to v5

[killianmuldoon]

Kustomize released v5.0.0 in February - CAPI should bump the Kustomize version to keep up. Release notes are here.

The following need to be taken care of ahead of and / or alongside the Kustomize bump:

1. Ensure encoding of creationTimestamp is handled correctly. This should be handled in upstream Kustomize - issue here - but if not there are workarounds for CAPI - e.g. patch creationTimestamp on each and every CRD. Reference issue in CAPI.
2. Take care of deprecations: The following have been deprecated:

• vars -> replacements
• bases -> resources
• patchesStrategicMerge -> patches
• patchesJson6902 -> patches

/area dependency

[fabriziopandini]

Let's consider if to wait for a patch release with the fix for creationTimestamp
/triage accepted
/help

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In response to this:

Let's consider if to wait for a patch release with the fix for creationTimestamp
/triage accepted
/help

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[killianmuldoon]

Let's consider if to wait for a patch release with the fix for creationTimestamp

Yeah - I'm watching that issue to see if there's an update. We should consider it a blocker until then IMO.

[james-callahan]

Yeah - I'm watching that issue to see if there's an update. We should consider it a blocker until then IMO.

Should still be able to work through the deprecations in the mean-time.

[sbueringer]

I've opened a related issue to bump controller-tools: #8546

As far as I can tell we should be able to bump kustomize after we bumped controller-tools?

[fabriziopandini]

/kind cleanup
/priority-important-soon