Automatic merge from submit-queue (batch tested with PRs 42775, 42991, 42968, 43029)
Remove 'beta' from default storage class annotation
I forgot to update default storage class annotation in my storage.k8s.io/v1beta1 -> v1 PRs. Let's fix it before 1.6 is released.
I consider it as a bugfix, in #40088 I already updated the release notes to include non-beta annotation `storageclass.kubernetes.io/is-default-class`
```release-note
NONE
```
@kubernetes/sig-storage-pr-reviews
@msau42, please help with merging.