* Update docs for testing FastAPI. Include using `POST`, sending JSON, testing headers, etc. New documentation: [Testing](https://fastapi.tiangolo.com/tutorial/testing/#testing-extended-example). PR [#271](https://github.com/tiangolo/fastapi/pull/271).

- 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)) [SIG API Machinery, Auth and Testing]

- Kubeadm: enabled the v1beta4 API. For a complete changelog since v1beta3 please see https://kubernetes.io/docs/reference/config-api/kubeadm-config.v1beta4/. 
  
  The API does include a few breaking changes:
  - The "extraArgs" component construct is now a list of "name"/"value" pairs instead of a string/string map. This has been done to support duplicate args where needed.

* Fix a bug where kubelet would not retry pod sandbox creation when the restart policy of the pod is Never ([#79451](https://github.com/kubernetes/kubernetes/pull/79451), [@yujuhong](https://github.com/yujuhong))

* kube-proxy: feature gates are now specified as a map when provided via a JSON or YAML KubeProxyConfiguration, rather than as a string of key-value pairs. For example:

KubeProxyConfiguration Before:

```
apiVersion: kubeproxy.config.k8s.io/v1alpha1
kind: KubeProxyConfiguration
**featureGates: "SupportIPVSProxyMode=true"**
```

- Graduated relaxed DNS search string validation to GA. For the Pod API, `.spec.dnsConfig.searches`
  now allows an underscore (`_`) where a dash (`-`) would be allowed, and it allows search strings be a single dot `.`. ([#132036](https://github.com/kubernetes/kubernetes/pull/132036), [@adrianmoisey](https://github.com/adrianmoisey)) [SIG Network and Testing]

    assertThat(queues).hasSize(1)
  }

  private fun data(byteCount: Int): Buffer = Buffer().write(ByteArray(byteCount))

  private fun assertStreamData(
    expected: String?,
    source: Source?,
  ) {
    val actual = source!!.buffer().readUtf8()
    assertThat(actual).isEqualTo(expected)
  }

  /**

- No ([#108432](https://github.com/kubernetes/kubernetes/pull/108432), [@iXinqi](https://github.com/iXinqi)) [SIG Testing and Windows]
- PreFilter extension in the scheduler framework now returns not only status but also PreFilterResult ([#108648](https://github.com/kubernetes/kubernetes/pull/108648), [@ahg-g](https://github.com/ahg-g)) [SIG Scheduling, Storage and Testing]

In-tree cloud provider bug fixes and improvements included:
- Adding initial Zones support to the provider using vSphere Tags
- Improving the testing harness for the cloud provider by introducing vcsim for automated testing
- Fixing a bug that was preventing updates from 1.10 to 1.11

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