Remove version restriction on huggingface-hub

This should (hopefully) fix a problem that some datasets are missing from the list of datasets, because the old version of huggingface-hub does not know how to deal with pagination.

requirements.txt

@@ -1,4 +1,4 @@
-huggingface-hub<0.8
+huggingface-hub
 python-dotenv
 streamlit==1.10.0
 datasets<2.3