Update numpy compatibility

[fbordeu]

PR to update paramz compatibility to numpy 2.

Important changes are:

• Drop support for python 3.9, 3.10 (end of life for 3.10 October 2026).
• Add support for python 3.13 and 3.14
• move from unitest to pytest for testing
• move configuration from setup.py to pyproject.toml
• ...

Thanks to @MartinBubel.

Felipe

[fbordeu]

Does anyone is maintaining this project?

[lawrennd]

@MartinBubel has kept it operating for GPy. I think @mzwiessele got distracted with his job.

I suppose I still have overall control, but I tend to defer to @MartinBubel and if he is happy then we can definitely assimilate the pull request.

[lawrennd]

(We're also very thankful you have got involved!)

[MartinBubel]

Awesome work @fbordeu
Even though its more changes that I'd normally appreciate in a single PR, I'm just so glad you made it work.

Also, awesome to see that there now is a simple way to setting np.ndarray memory addresses, which I thought was no longer possible. Sadly, last year I could not find that solution.

I have bumped to version number and mentioned your work in the changelog so we can quickly move to a release.

[MartinBubel]

As all tests succeed and the changes are looking fine, I'll merge the PR.
After the release, we can continue patching GPy, which I am sure, many people will appreciate.

[fbordeu]

Thank you.