advice on upgrading from 1.x to 2.x.

 *  Fix: Don't leak connections! There was a regression in 2.0.0-RC1 where
    connections were neither closed nor pooled.
 *  Fix: Revert builder-style return types from OkHttpClient's timeout methods
    for binary compatibility with OkHttp 1.x.
 *  Fix: Don't skip client stream 1 on SPDY/3.1. This fixes SPDY connectivity to

  Example: suppose you develop a custom plugin that denies Pods that have a `schedulable=false` label. 

     *
     * This implements Happy Eyeballs ([RFC 6555][rfc_6555]), balancing connect latency vs.
     * wasted resources.
     *
     * Defaults to enabled, call with [fastFallback] = false to revert to 4.x behaviour.
     *
     * [rfc_6555]: https://datatracker.ietf.org/doc/html/rfc6555
     */
    fun fastFallback(fastFallback: Boolean) =
      apply {
        this.fastFallback = fastFallback
      }

  of obtaining data through LIST/WATCH semantics. ([#110772](https://github.com/kubernetes/kubernetes/pull/110772), [@p0lyn0mial](https://github.com/p0lyn0mial)) [SIG API Machinery]

* kubectl apply: retry applying a patch if a version conflict error is encountered ([#26557](https://github.com/kubernetes/kubernetes/pull/26557), [@AdoHe](https://github.com/AdoHe))
* Revert "Wait for arc.getArchive() to complete before running tests" ([#27130](https://github.com/kubernetes/kubernetes/pull/27130), [@pwittrock](https://github.com/pwittrock))

- Revert Go version used to build Kubernetes to 1.23.0 ([#127861](https://github.com/kubernetes/kubernetes/pull/127861), [@xmudrii](https://github.com/xmudrii)) [SIG Release and Testing]

- Revert building binaries with PIE mode. ([#105352](https://github.com/kubernetes/kubernetes/pull/105352), [@ehashman](https://github.com/ehashman))
- Reverts adding namespace label to admission metrics (and histogram exansion) due to cardinality issues. ([#104033](https://github.com/kubernetes/kubernetes/pull/104033), [@s-urbaniak](https://github.com/s-urbaniak))

* Update Cluster Autoscaler to 1.15.0; changelog: https://github.com/kubernetes/autoscaler/releases/tag/cluster-autoscaler-1.15.0 ([#78866](https://github.com/kubernetes/kubernetes/pull/78866), [@losipiuk](https://github.com/losipiuk))
* Revert the CoreDNS version to 1.3.1 ([#78691](https://github.com/kubernetes/kubernetes/pull/78691), [@rajansandeep](https://github.com/rajansandeep))

- Revert addition of Add `PersistentVolumeClaimDeletePoilcy` to `StatefulSet`API. ([#103747](https://github.com/kubernetes/kubernetes/pull/103747), [@mattcary](https://github.com/mattcary))

- Disable watchcache for events.k8.io/Event resource for compatibility with core/Event. ([#96117](https://github.com/kubernetes/kubernetes/pull/96117), [@wojtek-t](https://github.com/wojtek-t)) [SIG Scalability]