chore: move misplaced test file to correct folder

I think this file was added around the same time that the tests were re-organized
into folders. It must have been overlooked during the changes. This commit moves
it to the right spot and corrects the copyright statement (this file was created
in 2024).

Signed-off-by: Dustin Popp <dpopp07@gmail.com>

packages/ruleset/test/required-enum-properties-in-response.test.js → packages/ruleset/test/rules/required-enum-properties-in-response.test.js

@@ -1,5 +1,5 @@
 /**
- * Copyright 2017 - 2024 IBM Corporation.
+ * Copyright 2024 IBM Corporation.
  * SPDX-License-Identifier: Apache2.0
  */