change script

scripts/process-issues.py

@@ -103,11 +103,11 @@ def main():
                     continue
 
                 print(f">> Will tag issue #{issue_number} with '{stale_tag}'")
-                update_labels = list(update_labels | stale_tag)
+                update_labels.add(stale_tag)
 
 
         # --- Make update with new labels ---
-        update_payload = {'labels': update_labels}
+        update_payload = {'labels': list(update_labels)}
         update_url = f"{base_api_url}/{issue_number}/labels"
 
         print(f">> Updating Issue #{issue_number} ...")