Python 3.9 support plain

[guizili0]

Hi Do you have plan to support python version 3.9? thanks,

[jli]

Based on https://pypi.org/simple/tfx-bsl/, it seems that tfx-bsl started building wheels for python 3.9 as of tfx-bsl version 1.8.0.

[guizili0]

Based on https://pypi.org/simple/tfx-bsl/, it seems that tfx-bsl started building wheels for python 3.9 as of tfx-bsl version 1.8.0.

Thanks!
As this package need work with TF, can this package support python version align with TF? Like TF now support python3.10