### Auth

- Fixed OpenID Connect (OIDC) token refresh when the client secret contains a special character. ([#76914](https://github.com/kubernetes/kubernetes/pull/76914), [@tsuna](https://github.com/tsuna))

* API server authentication now caches successful bearer token authentication results for a few seconds. ([#50258](https://github.com/kubernetes/kubernetes/pull/50258), [@liggitt](https://github.com/liggitt))

* The CSIBlockVolume feature gate is now beta, and defaults to enabled. ([#74909](https://github.com/kubernetes/kubernetes/pull/74909), [@bswartz](https://github.com/bswartz))

* The OpenID Connect authenticator can now use a custom prefix, or omit the default prefix, for username and groups claims through the --oidc-username-prefix and --oidc-groups-prefix flags. For example, the authenticator can map a user with the username "jane"...

*   `tf.distribute`

    *   Opened an experimental API, `tf.distribute.experimental.coordinator.get_current_worker_index`, for retrieving the worker index from within a worker, when using parameter server training with a custom training loop.

background-clip: padding-box;\n  border: $modal-content-border-width solid $modal-content-border-color;\n  @include border-radius($modal-content-border-radius);\n  @include box-shadow($modal-content-box-shadow-xs);\n  // Remove focus outline from opened modal\n  outline: 0;\n}\n\n// Modal background\n.modal-backdrop {\n  position: fixed;\n  top: 0;\n  left: 0;\n  z-index: $zindex-modal-backdrop;\n  width: 100vw;\n  height: 100vh;\n  background-color: $modal-backdrop-bg;\n\n  // Fade for backdrop\n...

background-clip: padding-box;\n  border: $modal-content-border-width solid $modal-content-border-color;\n  @include border-radius($modal-content-border-radius);\n  @include box-shadow($modal-content-box-shadow-xs);\n  // Remove focus outline from opened modal\n  outline: 0;\n}\n\n// Modal background\n.modal-backdrop {\n  position: fixed;\n  top: 0;\n  left: 0;\n  z-index: $zindex-modal-backdrop;\n  width: 100vw;\n  height: 100vh;\n  background-color: $modal-backdrop-bg;\n\n  // Fade for backdrop\n...

background-clip: padding-box;\n  border: $modal-content-border-width solid $modal-content-border-color;\n  @include border-radius($modal-content-border-radius);\n  @include box-shadow($modal-content-box-shadow-xs);\n  // Remove focus outline from opened modal\n  outline: 0;\n}\n\n// Modal background\n.modal-backdrop {\n  position: fixed;\n  top: 0;\n  left: 0;\n  z-index: $zindex-modal-backdrop;\n  width: 100vw;\n  height: 100vh;\n  background-color: $modal-backdrop-bg;\n\n  // Fade for backdrop\n...