</p>

<pre>
switch tag {
default: s3()
case 0, 1, 2, 3: s1()
case 4, 5, 6, 7: s2()
}

switch x := f(); {  // missing switch expression means "true"
case x &lt; 0: return -x
default: return x
}

switch {
case x &lt; y: f1()
case x &lt; z: f2()
case x == 4: f3()
}
</pre>

<p>

## Changes by Kind

### Feature

- Kubernetes is now built with go 1.21.9
  - update debian-base/set-cap to bookworm-v1.0.2 ([#124198](https://github.com/kubernetes/kubernetes/pull/124198), [@cpanato](https://github.com/cpanato)) [SIG API Machinery, Architecture, Release and Testing]

### Bug or Regression

- Improved FormatMap: Improves performance by about 4x, or nearly 2x in the worst case ([#112661](https://github.com/kubernetes/kubernetes/pull/112661), [@aimuz](https://github.com/aimuz)) [SIG Node]
- Improved misleading message, in case of no metrics received for the `HPA` controlled pods. ([#114740](https://github.com/kubernetes/kubernetes/pull/114740), [@kushagra98](https://github.com/kushagra98))

    String SCHEDULER_MONITOR_INTERVAL = "scheduler.monitor.interval";

    /** The key of the configuration. e.g. https://fess.codelibs.org/{lang}/{version}/admin/ */
    String ONLINE_HELP_BASE_LINK = "online.help.base.link";

    /** The key of the configuration. e.g. https://fess.codelibs.org/{lang}/{version}/install/install.html */
    String ONLINE_HELP_INSTALLATION = "online.help.installation";

message PodDNSConfig {
  // A list of DNS name server IP addresses.
  // This will be appended to the base nameservers generated from DNSPolicy.
  // Duplicated nameservers will be removed.
  // +optional
  repeated string nameservers = 1;

  // A list of DNS search domains for host-name lookup.
  // This will be appended to the base search paths generated from DNSPolicy.
  // Duplicated search paths will be removed.
  // +optional

## Changes by Kind

### Feature

- Kubernetes is now built with go 1.21.9
  - update debian-base to bookworm-v1.0.2 ([#124197](https://github.com/kubernetes/kubernetes/pull/124197), [@cpanato](https://github.com/cpanato)) [SIG API Machinery, Architecture, Cloud Provider, Release, Storage and Testing]

### Bug or Regression

- Component-base: make the validation logic about LeaderElectionConfiguration consistent between component-base and client-go ([#111758](https://github.com/kubernetes/kubernetes/pull/111758), [@SataQiu](https://github.com/SataQiu)) [SIG API Machinery and Scheduling]

* ✏️ Fix typo in `fastapi/routing.py` . PR [#10520](https://github.com/tiangolo/fastapi/pull/10520) by [@sepsh](https://github.com/sepsh).
* 📝 Replace HTTP code returned in case of existing user error in docs for testing. PR [#4482](https://github.com/tiangolo/fastapi/pull/4482) by [@TristanMarion](https://github.com/TristanMarion).