BLD: add support for numpy 2

[neutrinoceros]

PR Summary

numpy 2.0.0rc1 was just released, meaning it's now ABI stable, so we can (and should) start publishing wheels built against.
This is the last blocker for yt 4.3.1

PR Checklist

• New features are documented, with docstrings and narrative docs
• Adds a test for any bugs fixed. Adds tests for new features.

[neutrinoceros]

Ah, I opened it too soon: I'm also working on the ewah-bool-utils release and wheels are still building. Will refresh when it's actually up.

[neutrinoceros]

Whoops, I forgot to also bump runtime requirements on ewah.

[chrishavlin]

just in case anyone else looking is initially confused like I was (@neutrinoceros correct me if I'm wrong) -- the tests that run with this PR don't actually end up using np 2.0 because some of yt's dependencies are pinning np<2 still (pandas, scipy, more). but the weekly bleeding edge test does use np 2.0, so we should be in pretty good shape as more dependencies unpin.

[neutrinoceros]

That's right !

[lumberbot-app]

Owee, I'm MrMeeseeks, Look at me.

There seem to be a conflict, please backport manually. Here are approximate instructions:

1. Checkout backport branch and update it.

git checkout yt-4.3.x
git pull

2. Cherry pick the first parent branch of the this PR on top of the older branch:

git cherry-pick -x -m1 6d121f58543bedb1f587492cd0601a69f06a736a

3. You will likely have some merge/cherry-pick conflict here, fix them and commit:

git commit -am 'Backport PR #4859: BLD: add support for numpy 2'

4. Push to a named branch:

git push YOURFORK yt-4.3.x:auto-backport-of-pr-4859-on-yt-4.3.x

5. Create a PR against branch yt-4.3.x, I would have named this PR:

"Backport PR #4859 on branch yt-4.3.x (BLD: add support for numpy 2)"

And apply the correct labels and milestones.

Congratulations — you did some good work! Hopefully your backport PR will be tested by the continuous integration and merged soon!

Remember to remove the Still Needs Manual Backport label once the PR gets merged.

If these instructions are inaccurate, feel free to suggest an improvement.

[neutrinoceros]

Ah, this one is really important to the release so I'll backport manually