- Replaced deprecated package `k8s.io/utils/pointer` with `k8s.io/utils/ptr` for the apiextensions-apiserver apiextensions. ([#132723](https://github.com/kubernetes/kubernetes/pull/132723), [@PatrickLaabs](https://github.com/PatrickLaabs))

- kubeadm: all master components are now exclusively relying on the `PriorityClassName` pod spec for annotating them as cluster critical components. Since `scheduler.alpha.kubernetes.io/critical-pod` annotation is no longer supported by Kubernetes 1.14 this annotation is no longer added to master components. ([#73857](https://github.com/kubernetes/kubernetes/pull/73857), [@ereslibre](https://github.com/ereslibre))...

- Kubeadm: `kubeadm upgrade node` now supports `addon` and `post-upgrade` phases. User can use `kubeadm upgrade node phase addon` to execute the addon upgrade, or use `kubeadm upgrade node --skip-phases addon` to skip the addon upgrade. Currently, the `post-upgrade` phase is no-op, and it is mainly used to handle some release specific post-upgrade tasks. ([#127242](https://github.com/kubernetes/kubernetes/pull/127242), [@SataQiu](https://github.com/SataQiu))...

    val post =
      getResponse(
        Request(
          url = server.url("/"),
          body = "body!".toRequestBody(null),
        ),
      )
    assertContent("def", post)
    val get = server.takeRequest()
    assertThat(get.exchangeIndex).isEqualTo(0)
    val post1 = server.takeRequest()
    assertThat(post1.body?.utf8()).isEqualTo("body!")

		}
		if dataDir != "" {
			versionID := fi.VersionID
			if versionID == "" {
				versionID = nullVersionID
			}

			// PR #11758 used DataDir, preserve it
			// for users who might have used master
			// branch
			xlMeta.data.remove(versionID, dataDir)

			// We need to attempt delete "dataDir" on the disk
			// due to a CopyObject() bug where it might have

- Ignore context canceled from validate and mutate webhook ([#120017](https://github.com/kubernetes/kubernetes/pull/120017), [@divyasri537](https://github.com/divyasri537)) [SIG API Machinery]
- Kubeadm: fix nil pointer when etcd member is already removed ([#120013](https://github.com/kubernetes/kubernetes/pull/120013), [@neolit123](https://github.com/neolit123)) [SIG Cluster Lifecycle]

### Other (Cleanup or Flake)

### Other (Cleanup or Flake)
 - base-images: Use debian-base:v2.1.0 (update to Debian Buster, includes CVE fixes)

* Ensures that the node-role.kubernetes.io/master taint is applied to the master with NoSchedule on GCE. ([#78183](https://github.com/kubernetes/kubernetes/pull/78183), [@cheftako](https://github.com/cheftako))
* Add Post-bind extension point to the scheduling framework ([#77567](https://github.com/kubernetes/kubernetes/pull/77567), [@wgliang](https://github.com/wgliang))

    public static final String LABELS_HOME_PHONE = "{labels.homePhone}";

    /** The key of the message: Home Postal Address */
    public static final String LABELS_user_homePostalAddress = "{labels.user_homePostalAddress}";

    /** The key of the message: Home Postal Address */
    public static final String LABELS_HOME_POSTAL_ADDRESS = "{labels.homePostalAddress}";

* `dependencies`: to include ✨ router-level dependencies ✨ that apply to all the *path operations* in a router. Up to now, this was only possible with `include_router`.
* `callbacks`: OpenAPI callbacks that apply to all the *path operations* in this router.
* `deprecated`: to mark all the *path operations* in a router as deprecated.