tests: fix CI

canaille/core/endpoints/groups.py

@@ -152,7 +152,7 @@ def delete_member(group):
         group.members = [
             member for member in group.members if member != form.member.data
         ]
-        BaseBackend.instance.save(group)
+        Backend.instance.save(group)
 
     return edit_group(group)
 

tests/core/test_groups.py

@@ -310,7 +310,7 @@ def test_remove_member(testclient, logged_admin, foo_group, user, moderator, bac
         "John (johnny) Doe has been removed from the group foo",
     ) in res.flashes
 
-    foo_group.reload()
+    backend.reload(foo_group)
     assert user not in foo_group.members