update postgres initadmin password

deployment/memgraph/secrets.yaml

@@ -7,5 +7,5 @@ metadata:
   labels:
     secret-generator.cs.sap.com/enabled: "true"
 stringData:
-  USER: "memgraph"
+  USER: memgraph
   PASSWORD: "%generate"

deployment/zitadel/postgres-values.yaml

@@ -7,7 +7,6 @@ global:
       existingSecret: postgres-auth
       username: zitadel
       secretKeys:
-        adminPasswordKey: admin-password
         userPasswordKey: user-password
 
 volumePermissions:

deployment/zitadel/values.yaml

@@ -51,5 +51,5 @@ env:
   - name: ZITADEL_DATABASE_POSTGRES_ADMIN_PASSWORD
     valueFrom:
       secretKeyRef:
-        name: postgres-auth
-        key: admin-password
+        name: postgresql
+        key: postgres-password