Update values.yaml

Author: rishabh6788

helm/opendistro-es/values.yaml

@@ -14,7 +14,7 @@
 kibana:
   enabled: true
   image: amazon/opendistro-for-elasticsearch-kibana
-  imageTag: 1.4.0
+  imageTag: 1.6.0
   replicas: 1
   port: 5601
   externalPort: 443
@@ -426,7 +426,7 @@ elasticsearch:
   maxMapCount: 262144
 
   image: amazon/opendistro-for-elasticsearch
-  imageTag: 1.4.0
+  imageTag: 1.6.0
 
   configDirectory: /usr/share/elasticsearch/config