[v0.31.2] Hot-fix: make `hf-xet` optional again and bump the min version of the package
Patch release to make hf-xet optional. More context in #3079 and #3078.
Full Changelog: https://github.com/huggingface/huggingface_hub/compare/v0.31.1...v0.31.2
Fetched April 7, 2026