Ignore more files for GitHub test action

Author: ahmig

.github/workflows/test.yml

@@ -25,7 +25,7 @@ jobs:
         with:
           cancel_others: 'true'
           concurrent_skipping: 'same_content_newer'
-          paths_ignore: '["**/README.md"]'
+          paths_ignore: '["**/README.md", "CITATION.cff"]'
 
   run_test_pipeline:
     needs: skip_duplicate