Update Postgres to v16

WARNING: This will require dumping and restoring
the database

docker-compose.yml

@@ -1,7 +1,7 @@
 version: '3'
 services:
   db:
-    image: "postgres:14.1"
+    image: "postgres:16.2"
     restart: unless-stopped
     volumes:
       - "./data/db:/var/lib/postgresql/data"