feat(container): update ghcr.io/cloudnative-pg/postgresql ( 16.4-51 → 16.6-7 )

[renovate]

This PR contains the following updates:

Package	Update	Change
ghcr.io/cloudnative-pg/postgresql	minor	16.4-51 -> 16.6-7

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[github-actions]

kustomization changes in kubernetes/main

--- kubernetes/main/apps/database/cloudnative-pg/cluster Kustomization: flux-system/cloudnative-pg-cluster Cluster: database/postgres16

+++ kubernetes/main/apps/database/cloudnative-pg/cluster Kustomization: flux-system/cloudnative-pg-cluster Cluster: database/postgres16

@@ -48,13 +48,13 @@

           name: cloudnative-pg
       serverName: postgres16-v2
       wal:
         compression: bzip2
         maxParallel: 8
     name: postgres16-v2
-  imageName: ghcr.io/cloudnative-pg/postgresql:16.4-51
+  imageName: ghcr.io/cloudnative-pg/postgresql:16.6-7
   instances: 3
   monitoring:
     enablePodMonitor: true
     podMonitorMetricRelabelings:
     - action: replace
       sourceLabels: