minor type fix for mypy

tests/test_constraints.py

@@ -68,7 +68,7 @@ def test_equalized_odds_lp_relaxation(
     sensitive_attribute: np.ndarray,
     predictor: callable,
     constraint_slack: float,
-    l_p_norm: int | str,
+    l_p_norm: int,
     random_seed: int,
 ):
     """Tests different l-p relaxations for the "equalized-odds" constraint."""