fix(container): update image quay.io/coreos/etcd ( v3.6.8 ➔ v3.6.9 )

Author: renovate[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:v3.6.8
+          image: quay.io/coreos/etcd:v3.6.9
           imagePullPolicy: IfNotPresent
           ports:
             - name: etcd-client