Update ghcr.io/canonical/charmed-postgresql Docker tag to v14.17 (#877)

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

Author: renovate[bot]

metadata.yaml

@@ -28,7 +28,7 @@ resources:
   postgresql-image:
     type: oci-image
     description: OCI image for PostgreSQL
-    upstream-source: ghcr.io/canonical/charmed-postgresql@sha256:71d49b632c8d9aa1bee79bd36c2ba793950fb22986fbb414e8b1ce0aa33b4922 # renovate: oci-image tag: 14.15-22.04_edge
+    upstream-source: ghcr.io/canonical/charmed-postgresql@sha256:90b7aa44cfbae32ba060a761f8ec31e35d7cd28bb845b69b3f78a3781153932f # renovate: oci-image tag: 14.17-22.04_edge
 
 peers:
   database-peers: