update some scraping config

apps/immich/postgres.yaml

@@ -21,14 +21,5 @@ spec:
     size: 1Gi
     storageClass: nfs-client
 
----
-apiVersion: monitoring.coreos.com/v1
-kind: PodMonitor
-metadata:
-  name: postgres-exporter
-spec:
-  selector:
-    matchLabels:
-      "cnpg.io/cluster": immich-postgres
-  podMetricsEndpoints:
-  - port: metrics
+  monitoring:
+    enablePodMonitor: true