HF datasets version fix

pyproject.toml

@@ -41,7 +41,7 @@ dependencies = [
 ]
 
 [project.optional-dependencies]
-huggingface = ["datasets>=2.7.0"]
+huggingface = ['datasets>=2.15.0; python_version > "3.7"', 'datasets>=2.7.0; python_version < "3.8"']
 pytorch = ["torchvision>=0.12.0"]
 azure = ["adlfs>=2022.2.0"] # latest compatible with Python 3.7
 gcs = ["gcsfs>=2022.1.0"] # latest compatible with Python 3.7