feat: use ScratchCat for test case instead of ceebee

Signed-off-by: Boss_1s <95505913+Boss-1s@users.noreply.github.com>

Author: Boss-1s

tests/test_memberships.py

@@ -11,7 +11,7 @@ def test_memberships():
     assert not u1.has_ears
     assert u1.has_badge()
 
-    u2 = sa.get_user("ceebee")
+    u2 = sa.get_user("ScratchCat")
     assert u2.is_member
     assert u2.has_ears
     assert u2.has_badge()