fix MacPython / pandas-wheels ci failures (#25537)

Author: simonjayhawkins

pandas/tests/test_sorting.py

@@ -409,8 +409,9 @@ def test_mixed_integer_from_list(self):
     def test_unsortable(self):
         # GH 13714
         arr = np.array([1, 2, datetime.now(), 0, 3], dtype=object)
-        msg = (r"'(<|>)' not supported between instances of"
-               r" 'datetime\.datetime' and 'int'|"
+        msg = (r"'(<|>)' not supported between instances of ('"
+               r"datetime\.datetime' and 'int'|'int' and 'datetime\.datetime"
+               r"')|"
                r"unorderable types: int\(\) > datetime\.datetime\(\)")
         if compat.PY2:
             # RuntimeWarning: tp_compare didn't return -1 or -2 for exception