*: define prometheus metrics in apps to prevent re-import

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

authentik/flows/signals.py

@@ -4,7 +4,7 @@ from django.db.models.signals import post_save, pre_delete
 from django.dispatch import receiver
 from structlog.stdlib import get_logger
 
-from authentik.flows.planner import GAUGE_FLOWS_CACHED
+from authentik.flows.apps import GAUGE_FLOWS_CACHED
 from authentik.root.monitoring import monitoring_set
 
 LOGGER = get_logger()