feat: add pgbouncer support to the docker container

Add the ability to configure the DISABLE_SERVER_SIDE_CURSORS parameter via environment variables.
More info: https://docs.djangoproject.com/en/4.2/ref/settings/#disable-server-side-cursors

docker/config.py

@@ -24,6 +24,7 @@
         'HOST': os.getenv('POSTGRES_HOST'),
         'PORT': os.getenv('POSTGRES_PORT','5432'),
         'OPTIONS': {'sslmode': os.getenv('POSTGRES_SSLMODE','disable')},
+        'DISABLE_SERVER_SIDE_CURSORS': os.getenv('POSTGRES_DISABLE_SERVER_SIDE_CURSORS', 'False') == 'True',
     }
 }
 SECRET_KEY = os.getenv('TAIGA_SECRET_KEY')