- Kubeadm: fix a bug where file copy(backup) could not be executed correctly on Windows platform during upgrade ([#117861](https://github.com/kubernetes/kubernetes/pull/117861), [@SataQiu](https://github.com/SataQiu)) [SIG Cluster Lifecycle]

- Kubeadm: during execution of the "check expiration" command, treat the etcd CA as external if there is a missing etcd CA key file (etcd/ca.key) and perform the proper validation on certificates signed by the etcd CA. Additionally, make sure that the CA for all entries...

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* Remove 0,1,3 from rand.String, to avoid 'bad words' ([#50070](https://github.com/kubernetes/kubernetes/pull/50070), [@dixudx](https://github.com/dixudx))
* Fix data race during addition of new CRD ([#50098](https://github.com/kubernetes/kubernetes/pull/50098), [@nikhita](https://github.com/nikhita))

- github.com/go-openapi/jsonreference: [v0.20.1 → v0.20.2](https://github.com/go-openapi/jsonreference/compare/v0.20.1...v0.20.2)
- github.com/go-task/slim-sprig: [348f09d → 52ccab3](https://github.com/go-task/slim-sprig/compare/348f09d...52ccab3)
- github.com/gofrs/uuid: [v4.0.0+incompatible → v4.4.0+incompatible](https://github.com/gofrs/uuid/compare/v4.0.0...v4.4.0)

- Introduces a new metric: `admission_webhook_request_total` with the following labels: name (string) - the webhook name, type (string) - the admission type, operation (string) - the requested verb, code (int) - the HTTP status code, rejected (bool) - whether the request was rejected, namespace (string) - the namespace of the requested resource. ([#103162](https://github.com/kubernetes/kubernetes/pull/103162), [@rmoriar1](https://github.com/rmoriar1))...

- Kubeadm: during "upgrade apply/diff/node", in case the `ClusterConfiguration.imageRepository` stored in the "kubeadm-config" `ConfigMap` contains the legacy "k8s.gcr.io" repository, modify it to the new default "registry.k8s.io". Reflect the change in the in-cluster `ConfigMap` only during "upgrade apply". ([#110343](https://github.com/kubernetes/kubernetes/pull/110343), [@neolit123](https://github.com/neolit123))...

improve the strict parsing of user YAML/JSON configuration files. Next to printing warnings for unknown and duplicate fields (current state), also print warnings for fields with incorrect case sensitivity - e.g. "controlPlaneEndpoint" (valid), "ControlPlaneEndpoint" (invalid). Instead of only printing warnings during "init" and "join" also print warnings when downloading the ClusterConfiguration, KubeletConfiguration or KubeProxyConfiguration objects from the cluster. This can be useful if the user has...

  
  kubelet also ignores an error during opening `/dev/kmsg`.
  This feature gate also allows kube-proxy to ignore an error during setting `RLIMIT_NOFILE`.
  

- OIDC authentication will now fail if the username asserted based on a CEL expression config is the empty string.  Previously the request would be authenticated with the username set to the empty string. ([#123568](https://github.com/kubernetes/kubernetes/pull/123568), [@enj](https://github.com/enj))