core: fix anonymous user being included in User API

# Conflicts:
#	authentik/admin/views/applications.py

authentik/core/api/users.py

@@ -1,5 +1,6 @@
 """User API Views"""
 from drf_yasg2.utils import swagger_auto_schema
+from guardian.utils import get_anonymous_user
 from rest_framework.decorators import action
 from rest_framework.request import Request
 from rest_framework.response import Response
@@ -33,7 +34,7 @@ class UserSerializer(ModelSerializer):
 class UserViewSet(ModelViewSet):
     """User Viewset"""
 
-    queryset = User.objects.all()
+    queryset = User.objects.all().exclude(pk=get_anonymous_user().pk)
     serializer_class = UserSerializer
 
     def get_queryset(self):