Properly install ruamel-yaml for windows CI

[lhoestq]

No description provided.

[albertvillanova]

@lhoestq I would say this does not "properly" install ruamel-yaml, but the contrary, you overwrite the previous version without desinstalling it first.

According to pip docs:

This can break your system if the existing package is of a different version or was installed with a different package manager!

Note that our case fulfills both conditions:

• the installing version (0.17.16) is different from the existing one (0.15.87)
• you are installing using pip (setuptools), whereas the exisitng version was installed using distutils

That is why I did not fix the issue this way, made a hotfix pinning huggingface_hub (#3025), while looking for a permanent solution for the issue.

[lhoestq]

Yea I did this because we need the latest version of huggingface_hub for #2986 and because I didn't want to ssh to the windows worker x)
Maybe it can be fixed by installing it with conda - let me try

[lhoestq]

Oh yea it may not work since it was first installed with distutils