chore(deps): update postgres-cluster docker tag to v7.7.0 (#4140)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [postgres-cluster](https://github.com/cloudnative-pg/cloudnative-pg) | minor | `7.6.0` → `7.7.0` |

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<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0My4yNS43IiwidXBkYXRlZEluVmVyIjoiNDMuMjUuNyIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOlsiaW1hZ2UiXX0=-->

Reviewed-on: #4140
Co-authored-by: Renovate Bot <renovate-bot@alexlebens.net>
Co-committed-by: Renovate Bot <renovate-bot@alexlebens.net>

clusters/cl01tl/helm/yamtrack/Chart.lock

@@ -4,9 +4,9 @@ dependencies:
   version: 4.6.2
 - name: postgres-cluster
   repository: oci://harbor.alexlebens.net/helm-charts
-  version: 7.6.0
+  version: 7.7.0
 - name: redis-replication
   repository: oci://harbor.alexlebens.net/helm-charts
   version: 1.0.4
-digest: sha256:4b2653e0dd3e91e629754e334c223a07dd82bc4c080058cfb23b7b8946e100dd
-generated: "2026-02-13T19:46:07.772155055Z"
+digest: sha256:0651b1a6a36b95790ef63ba3a87b2c98d53b8337f0e014d30571ba0ad4efc1d7
+generated: "2026-02-21T20:06:29.686229055Z"

clusters/cl01tl/helm/yamtrack/Chart.yaml

@@ -22,7 +22,7 @@ dependencies:
     version: 4.6.2
   - name: postgres-cluster
     alias: postgres-18-cluster
-    version: 7.6.0
+    version: 7.7.0
     repository: oci://harbor.alexlebens.net/helm-charts
   - name: redis-replication
     version: 1.0.4