- The endpointslice mirroring controller mirrors endpoints annotations and labels to the generated endpoint slices, it also ensures that updates on any of these fields on the endpoints are mirrored. 

### Certificates
* The CertificateSigningRequest API added the `extra` field to persist all information about the requesting user. This mirrors the fields in the SubjectAccessReview API used to check authorization. ([#41755](https://github.com/kubernetes/kubernetes/pull/41755), [@liggitt](https://github.com/liggitt))

## Dependencies

### Added
- github.com/go-errors/errors: [v1.0.1](https://github.com/go-errors/errors/tree/v1.0.1)
- github.com/gobuffalo/here: [v0.6.0](https://github.com/gobuffalo/here/tree/v0.6.0)
- github.com/google/shlex: [e7afc7f](https://github.com/google/shlex/tree/e7afc7f)

### Bug or Regression

- Aggregate errors when putting vmss ([#98350](https://github.com/kubernetes/kubernetes/pull/98350), [@nilo19](https://github.com/nilo19)) [SIG Cloud Provider]

- Number of errors reported to the metric `storage_operation_duration_seconds_count` for emptyDir decreased significantly because previously one error was reported for each projected volume created. ([#117022](https://github.com/kubernetes/kubernetes/pull/117022), [@mpatlasov](https://github.com/mpatlasov)) [SIG Storage]

- github.com/docker/docker: [v20.10.18+incompatible → v20.10.21+incompatible](https://github.com/docker/docker/compare/v20.10.18...v20.10.21)
- github.com/go-errors/errors: [v1.0.1 → v1.4.2](https://github.com/go-errors/errors/compare/v1.0.1...v1.4.2)
- github.com/go-openapi/jsonpointer: [v0.19.5 → v0.19.6](https://github.com/go-openapi/jsonpointer/compare/v0.19.5...v0.19.6)

* Retry 'connection refused' errors when setting up clusters on GCE. ([#57394](https://github.com/kubernetes/kubernetes/pull/57394), [@mborsz](https://github.com/mborsz))
* Retry 'connection refused' errors when setting up clusters on GCE. ([#57394](https://github.com/kubernetes/kubernetes/pull/57394), [@mborsz](https://github.com/mborsz))

- Ensured that non-scheduling related errors (e.g., network errors) did not lengthen the Pod scheduling backoff time. ([#128748](https://github.com/kubernetes/kubernetes/pull/128748), [@sanposhiho](https://github.com/sanposhiho)) [SIG Scheduling and Testing]

* Correctly handle transient connection reset errors on GET requests from client library. ([#58520](https://github.com/kubernetes/kubernetes/pull/58520), [@porridge](https://github.com/porridge))

- Errors returned by apiserver from uninitialized cache will include last error from etcd ([#130899](https://github.com/kubernetes/kubernetes/pull/130899), [@serathius](https://github.com/serathius)) [SIG API Machinery and Testing]