chore(deps): update postgres docker tag to v16.8

docker-compose.yml

@@ -2,7 +2,7 @@ version: '3'
 
 services:
   db:
-    image: postgres:16.7@sha256:a35ec42526e3c522eb13b4d82eddaee875d0ac6ca9eb5cc5607e412854478c71
+    image: postgres:16.8@sha256:361c84f2bbe0f91135990841eb4eb4d2fe491f6e950686d9c746415dd1ffc65e
     restart: unless-stopped
     volumes:
       - db-data:/var/lib/postgresql/data