Update OpenAPI v3 test data from Kubernetes v1.24 to v1.35

[bryantbiggs]

Summary

The OpenAPI v3 per-group test data in pkg/util/proto/testdata/openapi_v3_0_0/ is from Kubernetes v1.24.0 and should be updated to a current release. Additionally, batch/v1beta1.json references an API group that no longer exists in modern Kubernetes.

Blocked on #477 — the proto v3 parser (ParseSchemaV3 in document_v3.go) does not handle allOf-wrapped $refs, which is the format Kubernetes v1.35 uses. The parser falls through to the default case and returns Arbitrary, losing the reference entirely. Until #477 is fixed, updating the v3 test data will break tests.

Related: #582
Raised in #579 (comment) by @Jefftree