increase max connections for postgres

Author: jon-bell

supabase-pawtograder.yml

@@ -178,6 +178,8 @@ services:
       - config_file=/etc/postgresql/postgresql.conf
       - '-c'
       - log_min_messages=fatal
+      - '-c'
+      - 'max_connections=500'
     environment:
       - POSTGRES_HOST=/var/run/postgresql
       - 'PGPORT=${POSTGRES_PORT:-5432}'