## Changelog since v1.23.15

## Changes by Kind

### API Change

- Kubernetes 1.23 is now built with go1.19.4. To match behavior of previous Kubernetes 1.23 patch releases:
  - `kube-apiserver` defaults the GOGC setting to 63, to approximate go1.17 garbage collection memory performance in heavily loaded API servers

    <_comment>Lotus 1-2-3, version 2</_comment>
    <magic priority="50">
      <match value="0x00000200060406000800" type="string" offset="0">
      </match>
    </magic>
    <glob pattern="*.wk1"/>
    <glob pattern="*.wk2"/>
  </mime-type>
   
  <mime-type type="application/vnd.lotus-1-2-3;version=3">
    <sub-class-of type="application/vnd.lotus-1-2-3"/>
    <_comment>Lotus 1-2-3, version 3</_comment>

    - [Server Binaries](#server-binaries-6)
    - [Node Binaries](#node-binaries-6)
  - [Changelog since v1.12.3](#changelog-since-v1123)
    - [Action Required](#action-required)
    - [Other notable changes](#other-notable-changes-6)
- [v1.12.3](#v1123)
  - [Downloads for v1.12.3](#downloads-for-v1123)
    - [Client Binaries](#client-binaries-7)
    - [Server Binaries](#server-binaries-7)

- Fixed a regression in 1.23 that incorrectly pruned data from array items of a custom resource that set `x-kubernetes-preserve-unknown-fields: true`. ([#107688](https://github.com/kubernetes/kubernetes/pull/107688), [@liggitt](https://github.com/liggitt))

</p>

<p>
The switch expression may be preceded by a simple statement, which
executes before the expression is evaluated.
</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()

pkg syscall (netbsd-arm64-cgo), const DLT_SLIP_BSDOS = 13
pkg syscall (netbsd-arm64-cgo), const DLT_SLIP_BSDOS ideal-int
pkg syscall (netbsd-arm64-cgo), const DLT_SLIP ideal-int
pkg syscall (netbsd-arm64-cgo), const DLT_SUNATM = 123
pkg syscall (netbsd-arm64-cgo), const DLT_SUNATM ideal-int
pkg syscall (netbsd-arm64-cgo), const DLT_SYMANTEC_FIREWALL = 99
pkg syscall (netbsd-arm64-cgo), const DLT_SYMANTEC_FIREWALL ideal-int

- github.com/google/cadvisor: [v0.44.1 → v0.45.0](https://github.com/google/cadvisor/compare/v0.44.1...v0.45.0)
- github.com/google/cel-go: [v0.12.3 → v0.12.4](https://github.com/google/cel-go/compare/v0.12.3...v0.12.4)
- github.com/imdario/mergo: [v0.3.5 → v0.3.6](https://github.com/imdario/mergo/compare/v0.3.5...v0.3.6)

- Modify DNS-1123 error messages to indicate that RFC 1123 is not followed exactly ([#94182](https://github.com/kubernetes/kubernetes/pull/94182), [@mattfenwick](https://github.com/mattfenwick)) [SIG API Machinery, Apps, Auth, Network and Node]

- Scheduler's assumed...

* Fix duplicated param variable creation. PR [#123](https://github.com/tiangolo/fastapi/pull/123) by [@yihuang](https://github.com/yihuang).