Update test_models.py

Author: jan-janssen

tests/test_models.py

@@ -42,7 +42,7 @@ def test_input_node(self):
         self.assertEqual(node_with_value.value, 42)
 
     def test_input_node_invalid_value_raises(self):
-        bad_value = (1, 2)
+        bad_value = [(1, 2)]
         self.assertNotIsInstance(bad_value, JsonPrimitive)
         with self.assertRaises(ValidationError):
             PythonWorkflowDefinitionInputNode.model_validate(