Update eu.gcr.io/gardener-project/gardener/etcdbrctl Docker tag to v0.25.1

Author: 23t-renovate

charts/etcd/values.yaml

@@ -16,7 +16,7 @@ name: etcd
 
 images:
   etcd: eu.gcr.io/gardener-project/gardener/etcd:v3.5.2
-  etcd-backup-restore: eu.gcr.io/gardener-project/gardener/etcdbrctl:v0.19.0
+  etcd-backup-restore: eu.gcr.io/gardener-project/gardener/etcdbrctl:v0.25.1
 
 backup:
   schedule: "0 */24 * * *" # cron standard schedule