Update ghcr.io/canonical/charmed-postgresql:16.13-24.04_edge Docker digest to dd6788c (#1364)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

metadata.yaml

@@ -41,7 +41,7 @@ resources:
   postgresql-image:
     type: oci-image
     description: OCI image for PostgreSQL
-    upstream-source: ghcr.io/canonical/charmed-postgresql@sha256:7218539ba2653d3efa289917184d80ccd99f0e21d67c9e9b33007b5738ac43e2  # renovate: oci-image tag: 16.13-24.04_edge
+    upstream-source: ghcr.io/canonical/charmed-postgresql@sha256:dd6788c7f2be5530a9ae97775376ffcf00a30c3bc5c32d8e04541197742e3a9f  # renovate: oci-image tag: 16.13-24.04_edge
 
 peers:
   database-peers: