Change test_no_js_console to work in later node versions

In the latest node version, `console.log` is defined in `runInThisContext`, so this test would fail

Author: ThomasHickman

tests/test_examples.py

@@ -555,7 +555,8 @@ def test_no_js_console(self):
             output = pipe.getvalue()
             pipe.close()
 
-            self.assertIn("ReferenceError: console is not defined", output)
+            self.assertNotIn("[log] Log message", output)
+            self.assertNotIn("[err] Error message", output)
 
 if __name__ == '__main__':
     unittest.main()