### API Change

- Added the feature gates `StrictCostEnforcementForVAP` and `StrictCostEnforcementForWebhooks` to enforce the strct cost calculation for CEL extended libraries. It is strongly recommended to turn on the feature gates as early as possible. ([#124676](https://github.com/kubernetes/kubernetes/pull/124676), [@cici37](https://github.com/cici37)) [SIG API Machinery, Auth, Node and Testing]

        CipherSuite.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
        CipherSuite.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
        CipherSuite.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
      )

    // This is nearly equal to the cipher suites supported in Chrome 72, current as of 2019-02-24.
    // See https://tinyurl.com/okhttp-cipher-suites for availability.
    private val APPROVED_CIPHER_SUITES =
      listOf(
        // TLSv1.3.

nodes with pods may see pods that fail due to node admission

1.22 addressed a long-standing issue in the Kubelet where terminating pods were [vulnerable to race conditions](https://github.com/kubernetes/kubernetes/pull/102344) leading to early shutdown, resource leaks, or long delays in actually completing pod shutdown. As a consequence of this change the Kubelet now correctly takes into account the resources of running and terminating pods when deciding to accept new pods, since terminating...

A survey conducted in early 2019 by the working group (WG) Long Term Support (LTS) showed that a significant subset of Kubernetes end-users fail to upgrade within the previous 9-month support period. 
A yearly support period provides the cushion end-users appear to desire, and is more in harmony with familiar annual planning cycles.

 * API</h2>
 *
 * <p>The successor to Guava's caching API is <a
 * href="https://github.com/ben-manes/caffeine/wiki">Caffeine</a>. Its API is designed to make it a
 * nearly drop-in replacement. Note that it is not available for Android or GWT/J2CL and that it may
 * have <a href="https://github.com/ben-manes/caffeine/wiki/Guava">different (usually better)

- 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]

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