* kubeadm - fix upgrades with external etcd ([#63925](https://github.com/kubernetes/kubernetes/pull/63925), [@detiber](https://github.com/detiber))

* Update busybox image link to gcr.io for kube-proxy. ([#53818](https://github.com/kubernetes/kubernetes/pull/53818), [@MrHohn](https://github.com/MrHohn))
* Restores the ability to apply network policy objects against the networking.k8s.io/v1 API ([#54106](https://github.com/kubernetes/kubernetes/pull/54106), [@liggitt](https://github.com/liggitt))

		t.Fatalf("Could not get partial restore failures metric: %v", err)
	}
	if partialRestoreFailures != 0.0 {
		t.Errorf("Already did a partial resync? Something failed earlier!")
	}

	// Add a rule jumping from svc3's service chain to svc4's endpoint, then try to
	// delete svc4. This will fail because the partial resync won't rewrite svc3's
	// rules and so the partial restore would leave a dangling jump from there to

* kube-scheduler: restores default leader election behavior. leader-elect command line parameter should "true" ([#60524](https://github.com/kubernetes/kubernetes/pull/60524), [@dims](https://github.com/dims))

- github.com/certifi/gocertifi: [2c3bb06](https://github.com/certifi/gocertifi/tree/2c3bb06)
- github.com/checkpoint-restore/go-criu/v5: [v5.0.0](https://github.com/checkpoint-restore/go-criu/v5/tree/v5.0.0)
- github.com/cncf/udpa/go: [5459f2c](https://github.com/cncf/udpa/go/tree/5459f2c)
- github.com/cockroachdb/errors: [v1.2.4](https://github.com/cockroachdb/errors/tree/v1.2.4)

* Fix kubelet PVC stale metrics ([#59170](https://github.com/kubernetes/kubernetes/pull/59170), [@cofyc](https://github.com/cofyc))
* Restores the ability of older clients to delete and scale jobs with initContainers ([#59880](https://github.com/kubernetes/kubernetes/pull/59880), [@liggitt](https://github.com/liggitt))

### Changed
- github.com/cespare/xxhash/v2: [v2.1.1 → v2.1.2](https://github.com/cespare/xxhash/v2/compare/v2.1.1...v2.1.2)
- github.com/checkpoint-restore/go-criu/v5: [v5.0.0 → v5.3.0](https://github.com/checkpoint-restore/go-criu/v5/compare/v5.0.0...v5.3.0)
- github.com/cilium/ebpf: [v0.6.2 → v0.7.0](https://github.com/cilium/ebpf/compare/v0.6.2...v0.7.0)

* kube-scheduler: restores ability to run without authentication configuration lookup permissions ([#71755](https://github.com/kubernetes/kubernetes/pull/71755), [@liggitt](https://github.com/liggitt))

## Dependencies

### Added
- github.com/checkpoint-restore/go-criu/v5: [v5.0.0](https://github.com/checkpoint-restore/go-criu/v5/tree/v5.0.0)
- github.com/frankban/quicktest: [v1.11.3](https://github.com/frankban/quicktest/tree/v1.11.3)

### Changed

## Changelog since v1.15.3

### Other notable changes

* Restores compatibility with kubectl client-side validation when structural schemas are present in a CRD which sets spec.preserveUnknownFields=true ([#82666](https://github.com/kubernetes/kubernetes/pull/82666), [@liggitt](https://github.com/liggitt))