* The deprecated `ThirdPartyResource` (TPR) API was removed.
  To avoid losing your TPR data, [migrate to CustomResourceDefinition](https://kubernetes.io/docs/tasks/access-kubernetes-api/migrate-third-party-resource/).

* The following deprecated flags were removed from `kube-controller-manager`:

- CustomResourceDefinition schemas that use `x-kubernetes-list-map-keys` to specify properties that uniquely identify list items must make those properties required or have a default value, to ensure those properties are present for all list items. See https://kub...

- Added CEL runtime cost calculation into ValidatingAdmissionPolicy, matching the evaluation cost
  restrictions that already apply to CustomResourceDefinition.
  If rule evaluation uses more compute than the limit, the API server aborts the evaluation and the
  admission check that was being performed is aborted; the `failurePolicy` for the ValidatingAdmissionPolicy

### **Kubernetes API**
#### User Provided Extensions
* [beta] ThirdPartyResource is deprecated. Please migrate to the successor, CustomResourceDefinition. For more information, see [Custom Resources](https://kubernetes.io/docs/concepts/api-extension/custom-resources/) and [Migrate a ThirdPartyResource to CustomResourceDefinition](https://kubernetes.io/docs/tasks/access-kubernetes-api/migrate-third-party-resource/).

- Kube-apiserver: fix a possible panic validating a custom resource whose CustomResourceDefinition indicates a status subresource exists, but which does not define a `status` property in the `openAPIV3Schema` ([#135362](https://github.com/kubernetes/kubernetes/pull/135362), [@fusida](https://github.com/fusida)) [SIG API Machinery]

### API Change

- The metrics `etcd_request_duration_seconds` and `etcd_bookmark_counts` now differentiate by group resource instead of object type, allowing unique entries per `CustomResourceDefinition`, instead of grouping them all under `*unstructured.Unstructured`. ([#112042](https://github.com/kubernetes/kubernetes/pull/112042), [@ncdc](https://github.com/ncdc))

- Fix CustomResourceDefinition status.storedVersions validation error messages. ([#119653](https://github.com/kubernetes/kubernetes/pull/119653), [@sttts](https://github.com/sttts)) [SIG API Machinery]

Kubernetes Release Robot <******@****.***> 1773963480 +0000

- Fix spurious kube-apiserver log warnings related to openapi v3 merging when creating or modifying CustomResourceDefinition objects ([#109880](https://github.com/kubernetes/kubernetes/pull/109880), [@Jefftree](https://github.com/Jefftree)) [SIG API Machinery and Testing]