Merge branch 'master' into new-forms

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

# Conflicts:
#	Pipfile.lock
#	authentik/api/decorators.py
#	authentik/core/api/applications.py
#	authentik/core/api/users.py
#	authentik/events/api/event.py
#	authentik/events/api/notification_transport.py
#	authentik/flows/api/flows.py
#	swagger.yaml

authentik/policies/api/policies.py

@@ -7,14 +7,9 @@ from guardian.shortcuts import get_objects_for_user
 from rest_framework import mixins
 from rest_framework.decorators import action
 from rest_framework.exceptions import PermissionDenied
-from rest_framework.relations import PrimaryKeyRelatedField
 from rest_framework.request import Request
 from rest_framework.response import Response
-from rest_framework.serializers import (
-    ModelSerializer,
-    Serializer,
-    SerializerMethodField,
-)
+from rest_framework.serializers import ModelSerializer, SerializerMethodField
 from rest_framework.viewsets import GenericViewSet
 from structlog.stdlib import get_logger