## 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))

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

must be <a href="#Uniqueness_of_identifiers">unique</a>.
</p>

<pre>
field1, offset := nextField(str, 0)
field2, offset := nextField(str, offset)  // redeclares offset
x, y, x := 1, 2, 3                        // illegal: x repeated on left side of :=
</pre>

<p>
Short variable declarations may appear only inside functions.
In some contexts such as the initializers for

- 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)

- Scheduler's assumed...

## Urgent Upgrade Notes 

### (No, really, you MUST read this before you upgrade)

- 'The `IPv6DualStack` feature gate for external cloud providers was removed.
  (The feature became GA in 1.23 and the gate was removed for all other
  components several releases ago.) If you were still manually

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