Update postgres-cluster Docker tag to v7.11.2

clusters/cl01tl/helm/matrix-synapse/Chart.lock

@@ -19,7 +19,7 @@ dependencies:
   version: 2.4.0
 - name: postgres-cluster
   repository: oci://harbor.alexlebens.net/helm-charts
-  version: 7.11.1
+  version: 7.11.2
 - name: valkey
   repository: oci://harbor.alexlebens.net/helm-charts
   version: 0.5.0
@@ -38,5 +38,5 @@ dependencies:
 - name: volsync-target
   repository: oci://harbor.alexlebens.net/helm-charts
   version: 0.8.0
-digest: sha256:70a7f9dc242a1102eafa0b8a5c481954793d3450eea907c7fb5fd86cb81b1bea
-generated: "2026-04-03T21:00:39.545529-05:00"
+digest: sha256:0e8b1b79a98952ed49c87c6da83dcc2eed2aabbd755d9ebf1bdd3090f3ccc44c
+generated: "2026-04-04T20:08:43.445013943Z"