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/immich/Chart.lock

@@ -4,6 +4,6 @@ dependencies:
   version: 4.4.0
 - name: postgres-cluster
   repository: oci://harbor.alexlebens.net/helm-charts
-  version: 6.16.0
-digest: sha256:6c1412459bf39357f20db21735f64dc4f5fe2a0a746d19a78ddff43801610991
-generated: "2025-11-30T21:07:10.484678-06:00"
+  version: 6.16.1
+digest: sha256:65d33f10a17d25234358734184d3bc637209a12dc5f2122a594efdb02df15b41
+generated: "2025-12-04T00:01:45.803341058Z"

clusters/cl01tl/helm/immich/Chart.yaml

@@ -20,7 +20,7 @@ dependencies:
     version: 4.4.0
   - 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/immich.png
 appVersion: v2.0.1