fix: Pin environment versions

[juanfonsecaLS1]

This fixes #102 by making versions explicit in the environment files

[cbueth]

Thanks @juanfonsecaLS1 for opening the pull request. Looking at the pipeline I see there are still few tests failing.
Maybe you can reproduce the fails locally and either change the version pins or the code itself.

[juanfonsecaLS1]

It seems that everything works fine with Python = 3.10. I will just pin that version for the moment.

I will open a different PR with the updated code to ensure the compatibility with the current latest Python/NumPy versions, what do you think @cbueth?

[cbueth]

That's a good approach, so this PR is rather a quick fix and the other will probably need to add few more changes. Thanks for the suggestion!

[juanfonsecaLS1]

The quick patch is ready. I did not realise that your testing workflow would fail, since it runs the tests for the three versions. I did not want to change your testing set-up though.

[juanfonsecaLS1]

Just checking the pyproject.toml, I think I would rather fix the code than just limiting the python version, this to avoid any further conflicts with the classifiers (currently including 3.10, 3.11 and 3.12.

[cbueth]

Yes, that was to be expected and not too bad. But I see you're motivated for the fixes 👏