A fresh bootstrap without any pre-cached wheels also builds datasets-2.21.0. Our fsspec pin is too restrictive for 2.21.0.

# datasets-3.4.1 wants fsspec[http]<=2024.12.0,>=2023.1.0
# datasets-2.21.0 wants fsspec[http]<=2024.6.1,>=2023.1.0
fsspec<=2024.6.1

We are building datasets 2.10.0 because instructlab.sdg pins to < 3.0, https://github.com/instructlab/sdg/issues/580