fix: pin setuptools dependency below 73.0.0

[tommilligan]

ref: #2228

Please see above issue for description of failure.
The release of setuptools 73.0.0 appears to have broken the build process for pythran.

This can be mitigated by updating the build files, but as an immediate fix, pin to existing lower versions that build successfully.

[rgommers]

Note that this isn't a fix, just a workaround. So it shouldn't uses Closes in the PR description. I'll comment on the issue in more detail.

[tommilligan]

Note that this isn't a fix, just a workaround. So it shouldn't uses Closes in the PR description. I'll comment on the issue in more detail.

Thanks - amended.

[serge-sans-paille]

Quoting @rgommers :

I'd really like pythran to not need setuptools at all for the transpiling functionality it offers, but localize that to the extension module building functionality. If that's a lot of work, adding upper bounds to pythran releases is a reasonable shorter-term workaround.

I'll have a look.

[serge-sans-paille]

As explained in #2228 this should no longer be needed.