chore(deps): update postgresql docker tag to v16.7.5

Author: renovate[bot]

charts/nextcloud/Chart.yaml

@@ -28,7 +28,7 @@ maintainers:
     url: https://jessebot.work
 dependencies:
 - name: postgresql
-  version: 16.3.5
+  version: 16.7.5
   repository: oci://registry-1.docker.io/bitnamicharts
   condition: postgresql.enabled
 - name: mariadb