Upgrade to Postgres 14

This API depends on v3 API to start the database,
thus integrated compose file is used, instead of
standalone compose file. Even though this file
isn't usually used, update Postgres version, as
this should have been done in HPC-8969

compose.yaml

@@ -24,7 +24,7 @@ services:
     depends_on:
       - db
   db:
-    image: postgres:11.7
+    image: postgres:14.8-alpine3.18
     environment:
       - POSTGRES_PASSWORD=demo
       - POSTGRES_USER=demo