feat(container): update image quay.io/coreos/etcd ( v3.6.13 ➔ v3.7.0 ) (#1788)

Co-authored-by: daddy-ro[bot] <168710888+daddy-ro[bot]@users.noreply.github.com>

Author: daddy-ro[bot]

kubernetes/apps/openebs-system/etcd/app/statefulset.yaml

@@ -93,7 +93,7 @@ spec:
       containers:
         ## This example only has this etcd container.
         - name: etcd
-          image: quay.io/coreos/etcd:v3.6.13
+          image: quay.io/coreos/etcd:v3.7.0
           imagePullPolicy: IfNotPresent
           ports:
             - name: etcd-client