Update postgres-cluster Docker tag to v6.16.1 (#2237)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [postgres-cluster](https://github.com/cloudnative-pg/cloudnative-pg) | patch | `6.16.0` -> `6.16.1` |

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Reviewed-on: #2237
Co-authored-by: Renovate Bot <renovate-bot@alexlebens.net>
Co-committed-by: Renovate Bot <renovate-bot@alexlebens.net>

clusters/cl01tl/helm/grafana-operator/Chart.lock

@@ -4,6 +4,6 @@ dependencies:
   version: v5.20.0
 - name: postgres-cluster
   repository: oci://harbor.alexlebens.net/helm-charts
-  version: 6.16.0
-digest: sha256:d70b284b771af610116564e5f47d72415ab0d3520ecb552159ee8dc8acd2ab46
-generated: "2025-12-01T19:55:46.485062-06:00"
+  version: 6.16.1
+digest: sha256:3bd7096e4401df5818733b3e0b08f281c12af9b54a272fbe3e753b2616d725dd
+generated: "2025-12-04T00:01:28.278027037Z"

clusters/cl01tl/helm/grafana-operator/Chart.yaml

@@ -21,7 +21,7 @@ dependencies:
     repository: https://grafana.github.io/helm-charts
   - name: postgres-cluster
     alias: postgres-17-cluster
-    version: 6.16.0
+    version: 6.16.1
     repository: oci://harbor.alexlebens.net/helm-charts
 icon: https://cdn.jsdelivr.net/gh/selfhst/icons/png/grafana.png
 appVersion: v5.18.0