Use more generic variable name for expected lists

mailman_sync.py

@@ -116,6 +116,7 @@ def main(
     if not r.ok:
         print(f"Failed to get mailing list data from api: {r.status_code} {r.text}")
         return
+    expected_lists = r.json()
 
     existing_lists = subprocess.run(
         [mailman_bin / "list_lists", "-b"],
@@ -123,8 +124,7 @@ def main(
         capture_output=True,
         check=True,
     ).stdout.split("\n")
-    certification_lists = r.json()
-    for name, members in certification_lists.items():
+    for name, members in expected_lists.items():
         list_name = name + list_suffix
         list_manager = ListManager(mailman_bin, list_name, dry_run)
         if list_name not in existing_lists: