chore(deps): update docker.io/library/postgres docker tag to v17.6

docker-compose/authentik/compose.yaml

@@ -106,7 +106,7 @@ services:
     #   Alternatively, you can host your PostgreSQL database externally, and
     #   change the connection settings in the `authentik-server` and
     #   `authentik-worker`.
-    image: docker.io/library/postgres:17.5
+    image: docker.io/library/postgres:17.6
     container_name: authentik-db
     environment:
       - POSTGRES_USER=${POSTGRES_USER:-authentik}

docker-compose/postgres/compose.yaml

@@ -1,7 +1,7 @@
 ---
 services:
   postgres:
-    image: docker.io/library/postgres:17.5
+    image: docker.io/library/postgres:17.6
     container_name: postgres
     environment:
       - POSTGRES_INITDB_ARGS=${POSTGRES_INITDB_ARGS---data-checksums}