fix: remove hardcoded password defaults from docker-compose

docker-compose.yml

@@ -6,7 +6,7 @@ services:
     container_name: maqt-postgres
     environment:
       POSTGRES_USER: maqt
-      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-maqt123456}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
       POSTGRES_DB: maqt
     volumes:
       - pgdata:/var/lib/postgresql/data
@@ -25,7 +25,7 @@ services:
     ports:
       - "127.0.0.1:3002:3001"
     environment:
-      - DATABASE_URL=postgresql://maqt:${POSTGRES_PASSWORD:-maqt123456}@postgres:5432/maqt
+      - DATABASE_URL=postgresql://maqt:${POSTGRES_PASSWORD}@postgres:5432/maqt
       - JWT_SECRET=${JWT_SECRET}
       - ENCRYPTION_KEY=${ENCRYPTION_KEY}
       - PORT=3001