Manual cherry pick of kube-openapi changes for release-1.21

[ulucinar]

What type of PR is this?

/kind bug

What this PR does / why we need it:

Updates kube-openapi dependency to consume the aggregated OpenAPI spec lazy-marshaling behavior introduced with:
kubernetes/kube-openapi#251
and cherry picked to the kube-openapi/release-1.21 branch with:
kubernetes/kube-openapi#265

Looks like lazy-marshaling introduced with kubernetes/kube-openapi#251 enables us to better scale in the #-of-CRDs-per-cluster dimension.

Which issue(s) this PR fixes:

Fixes #101755
Fixes #105932

Does this PR introduce a user-facing change?

NONE

/cc @apelisse
/cc @DangerOnTheRanger
/sig api-machinery

[k8s-ci-robot]

Hi @ulucinar. Thanks for your PR.

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[DangerOnTheRanger]

/ok-to-test

[fedebongio]

/assign @apelisse @DangerOnTheRanger
/triage accepted

[liggitt]

commented at kubernetes/kube-openapi@65ecc9d#r746087650, but I would not expect to bump dependencies like this on release branches.

[liggitt]

commented at kubernetes/kube-openapi@65ecc9d#r746087650, but I would not expect to bump dependencies like this on release branches.

same likely applies for 1.20, but I didn't check that yet

[ulucinar]

commented at kubernetes/kube-openapi@65ecc9d#r746087650, but I would not expect to bump dependencies like this on release branches.

same likely applies for 1.20, but I didn't check that yet

Both of the v1.20 and v1.21 PRs now update only the kube-openapi dependency. Thank you very much @liggitt.

[liggitt]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: liggitt, ulucinar

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• OWNERS [liggitt]
• staging/src/k8s.io/api/OWNERS [liggitt]
• staging/src/k8s.io/legacy-cloud-providers/OWNERS [liggitt]

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[puerco]

Thanks a lot @ulucinar !
/lgtm