Merge pull request IBM#48 from manavgup/fix/postgres-version-values-yaml

Updated values.yaml to specify the version of postgres.
Signed-off-by: Vicky Kuo <vicky.kuo@ibm.com>

Author: crivetimihai

charts/mcp-stack/values.yaml

@@ -44,7 +44,7 @@ postgres:
   enabled: true
   image:
     repository: postgres
-    tag: "10.1"
+    tag: "17"
     pullPolicy: IfNotPresent
   service:
     type: ClusterIP