[Python][Packaging] Enable free-threaded wheels on Windows

[pitrou]

Describe the enhancement requested

Free-threaded wheels on Windows were blocked on the availability of NumPy packages. Those are now available in https://anaconda.org/scientific-python-nightly-wheels/numpy/files

Reference: numpy/numpy#26157 (comment)

Component(s)

Packaging, Python

[pitrou]

cc @raulcd @jorisvandenbossche @lysnikolaou

[lysnikolaou]

Thanks @pitrou for opening the issue. FYI I'll probably have a look at pandas first and then try to get to this.

[kou]

Issue resolved by pull request 44804
#44804