BLD: build with numpy 2.0.0rc1 (or newer)

[neutrinoceros]

This is needed for runtime compatibility with the upcoming numpy 2.0, and I think that it's also sufficient, but maybe I'm missing something ? anyway feel free to push to this branch or to incorporate it some other way.

[larrybradley]

Many thanks, @neutrinoceros. Why are there merge conflicts?

[neutrinoceros]

because I forgot to update my local clone before I branched out. Should be fixed now !

[pllim]

Hmm, still see failure over at astropy/astropy-integration-testing#16 so maybe that is something different... https://github.com/astropy/astropy-integration-testing/actions/runs/8568043943/job/23501813211?pr=16

  File "astropy/stats/__init__.py", line 15, in <module>
    from . import (
  File "astropy/stats/sigma_clipping.py", line 16, in <module>
    import bottleneck
  File "bottleneck/__init__.py", line 7, in <module>
    from .move import (move_argmax, move_argmin, move_max, move_mean, move_median,
AttributeError: _ARRAY_API not found

Maybe pydata/bottleneck#445 would fix it?

[larrybradley]

That looks like an issue in astropy.stats.

There is a small issue I need to fix in photutils (and regions), where I need to add the now-required copy keyword to __array__ methods.