Apply suggestions from code review

Co-authored-by: Sebastian Bernauer <sebastian.bernauer@stackable.de>

Author: NickLarsenNZ

stacks/end-to-end-security/superset.yaml

@@ -5,7 +5,7 @@ metadata:
   name: superset
 spec:
   image:
-    productVersion: 6.0.0-rc2
+    productVersion: 6.0.0
   clusterConfig:
     credentialsSecret: superset-credentials
     mapboxSecret: superset-mapbox-api-key