Upgrade huggingface_hub to 0.15.1
https://github.com/huggingface/huggingface_hub/releases/tag/v0.15.0

- use `run_as_future=True` in parquet upload?
- `list_datasets` breaking change should not affect us
Upgrade huggingface_hub to 0.15.1: https://github.com/huggingface/huggingface_hub/releases/tag/v0.15.0

- use `run_as_future=True` in parquet upload?
- `list_datasets` breaking change should not affect us