chore(common): update image ghcr.io/cloudnative-pg/postgresql digest to 8766b02 (#44627)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| ghcr.io/cloudnative-pg/postgresql | digest | `44ae136` → `8766b02` |

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charts/library/common/Chart.yaml

@@ -50,5 +50,5 @@ sources:
   - https://github.com/trueforge-org/truecharts/tree/master/charts/library/common
   - https://hub.docker.com/_/
 type: library
-version: 28.29.49
+version: 28.29.50
 

charts/library/common/values.yaml

@@ -649,7 +649,7 @@ postgres15Image:
 
 postgres16Image:
   repository: ghcr.io/cloudnative-pg/postgresql
-  tag: "16.11@sha256:44ae136890c37438f5324e4fe5b1f79e556440585688fe558604cc0d408bc560"
+  tag: "16.11@sha256:8766b02aeb745c0d11aa1fff1823cde867a37bbe3c4b7bfb1869ed94f368ff88"
   pullPolicy: IfNotPresent
 
 postgresPostgis15Image: