[etcd-backup-restore]

🐛 Bug Fixes

[OPERATOR] Fixes a bug in backup-restore which falsely detects scale-up scenario incase of rolling update of statefulset. (gardener/etcd-backup-restore#614, @ishan16696)

[OPERATOR] Base alpine image upgraded from 3.15.7 to 3.15.8 (gardener/etcd-backup-restore#612, @aaronfern)
[OPERATOR] Add a learner with backoff in case of scale-up feature is triggered. (gardener/etcd-backup-restore#617, @ishan16696)
[OPERATOR] Added a safety check before adding a learner(non-voting) member in etcd cluster. (gardener/etcd-backup-restore#605, @ishan16696)
[DEVELOPER] Upgrade to go 1.20.3 (gardener/etcd-backup-restore#613, @shreyas-s-rao)
[DEVELOPER] Block public access for S3 buckets created by integration tests. (gardener/etcd-backup-restore#615, @shreyas-s-rao)