Change hns bucket name

tosfs/tests/test_tosfs.py

@@ -541,7 +541,7 @@ def test_walk(tosfs: TosFileSystem, bucket: str, temporary_workspace: str) -> No
         assert len(dirs) > 0
         assert files == []
 
-    for root, dirs, files in tosfs.walk(bucket, maxdepth=1):
+    for root, dirs, _ in tosfs.walk(bucket, maxdepth=1):
         assert root == bucket
         assert len(dirs) > 0