* GC is now bound by QPS so if you need more QPS to avoid ratelimiting GC, you'll have to set it explicitly. ([#63657](https://github.com/kubernetes/kubernetes/pull/63657), [@shyamjvs](https://github.com/shyamjvs))

* ignore images in used by running containers when GC ([#57020](https://github.com/kubernetes/kubernetes/pull/57020), [@dixudx](https://github.com/dixudx))

  - go_gc_cycles_automatic_gc_cycles_total
  - go_gc_cycles_forced_gc_cycles_total
  - go_gc_cycles_total_gc_cycles_total
  - go_gc_heap_allocs_by_size_bytes
  - go_gc_heap_allocs_bytes_total
  - go_gc_heap_allocs_objects_total
  - go_gc_heap_frees_by_size_bytes
  - go_gc_heap_frees_bytes_total
  - go_gc_heap_frees_objects_total
  - go_gc_heap_goal_bytes
  - go_gc_heap_objects_objects

### Other notable changes

* Build: Add KUBE_GCS_RELEASE_BUCKET_MIRROR option to push-ci-build.sh ([#28172](https://github.com/kubernetes/kubernetes/pull/28172), [@zmerlynn](https://github.com/zmerlynn))
* Image GC logic should compensate for reserved blocks ([#27996](https://github.com/kubernetes/kubernetes/pull/27996), [@ronnielai](https://github.com/ronnielai))

* Bump GCE debian image to container-vm-v20161025 (CVE-2016-5195 Dirty… ([#35825](https://github.com/kubernetes/kubernetes/pull/35825), [@dchen1107](https://github.com/dchen1107))
* GC pod ips ([#35572](https://github.com/kubernetes/kubernetes/pull/35572), [@bprashanth](https://github.com/bprashanth))

* kubenet: SyncHostports for both running and ready to run pods. ([#31388](https://github.com/kubernetes/kubernetes/pull/31388), [@yifan-gu](https://github.com/yifan-gu))
* GC pod ips ([#35572](https://github.com/kubernetes/kubernetes/pull/35572), [@bprashanth](https://github.com/bprashanth))

- Removed the error message label from the `kubelet_started_pods_errors_total` metric ([#105213](https://github.com/kubernetes/kubernetes/pull/105213), [@yxxhero](https://github.com/yxxhero))

* Bug fixes

- No-op and GC related updates to cluster trust bundles no longer require attest authorization when the `ClusterTrustBundleAttest` plugin is enabled. ([#120779](https://github.com/kubernetes/kubernetes/pull/120779), [@enj](https://github.com/enj))