ossfs not working on Python 3.8

[kuantian-zhang]

The latest version of filesystem_spec can no longer run on Python 3.8 fsspec/filesystem_spec/issues/1816, but we still have some services running on Python 3.8. When installing ossfs package, it automatically installs the latest filesystem_spec package, causing the services to fail. Can we restrict the version in the pyproject.toml dependencies? For example:

dependencies = [
    "aiooss2>=0.2.11",  
    "fsspec>=2023.9.2,<=2025.3.0; python_version=='3.8'",  
    "fsspec>=2023.9.2 ; python_version>'3.8'",  
    "oss2==2.18.4"  
]