Update hfh
In particular: we now use the new [`list_repo_refs`](https://huggingface.co/docs/huggingface_hub/main/en/package_reference/hf_api#huggingface_hub.HfApi.list_repo_refs) method, and the new [`revision`](https://github.com/huggingface/huggingface_hub/pull/1293) parameter when we create the `refs/convert/parquet` branch.
Update hfh: In particular: we now use the new [`list_repo_refs`](https://huggingface.co/docs/huggingface_hub/main/en/package_reference/hf_api#huggingface_hub.HfApi.list_repo_refs) method, and the new [`revision`](https://github.com/huggingface/huggingface_hub/pull/1293) parameter when we create the `refs/convert/parquet` branch.