fix tests for cms 3

Author: fsbraun

tests/test_ajax_plugin.py

@@ -294,6 +294,7 @@ def test_form_submission_with_parameters(self):
         self.assertIn("result", json_data)
 
 
+@skipIf(cms_version < "4", "Form rendering tests require django CMS 4 or higher")
 class FormEntryCreationTestCase(TestFixture, CMSTestCase):
     """Tests for FormEntry creation during form submission"""