Jsonschema 4.20 prefixItems test fix

Author: p1c2u

tests/integration/test_validators.py

@@ -863,5 +863,10 @@ def test_array_prefixitems_invalid(self, validator_class, value):
         with pytest.raises(ValidationError) as excinfo:
             validator.validate(value)
 
-        error = "Expected at most 4 items, but found 5"
-        assert error in str(excinfo.value)
+        errors = [
+            # jsonschema < 4.20.0
+            "Expected at most 4 items, but found 5",
+            # jsonschema >= 4.20.0
+            "Expected at most 4 items but found 1 extra",
+        ]
+        assert any(error in str(excinfo.value) for error in errors)