fix(container): update image ghcr.io/cloudnative-pg/postgresql to v16.4-3

[layla-bot]

This PR contains the following updates:

Package	Update	Change
ghcr.io/cloudnative-pg/postgresql	patch	16.4-2 -> 16.4-3

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by Renovate Bot.

[layla-bot]

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

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

@@ -45,13 +45,13 @@

           name: cloudnative-pg-secret
       serverName: postgres-v20
       wal:
         compression: bzip2
         maxParallel: 8
     name: postgres-v20
-  imageName: ghcr.io/cloudnative-pg/postgresql:16.4-2
+  imageName: ghcr.io/cloudnative-pg/postgresql:16.4-3
   instances: 1
   monitoring:
     enablePodMonitor: true
   postgresql:
     parameters:
       max_connections: '600'