Merge pull request #6969 from zalando-incubator/unbound-1.19.1

Update to unbound 1.19.1

Author: katyanna

cluster/manifests/coredns-local/daemonset-coredns.yaml

@@ -39,7 +39,7 @@ spec:
       containers:
 {{ if eq .Cluster.ConfigItems.dns_cache "unbound" }}
       - name: unbound
-        image: container-registry.zalando.net/teapot/unbound:1.19.0-master-7
+        image: container-registry.zalando.net/teapot/unbound:1.19.1-master-8
         args:
         - -d
         - -c