Add 2024.12 to allowed array API versions

[ev-br]

This is a bit pre-emptive: 2024.12 Array API spec is not released yet :-).

However, the story goes like this:

The 2024.12 release is in the works and is expected "soon" (tm);
We would like to release array-api-compat and array-api-strict with 2024.12 support quickly once the spec itself is finalized;
Testing of array-api-compat across Array API provider libraries (numpy, pytorch, jax.numpy, dask) relies on array-api-tests;
array-api-tests relies on hypothesis.extra.array_api module;
if hypothesis.extra.array_api does not recognize 2024.12 as an allowed version, we cannot even start testing anything against the new spec version.

So I'm wondering what would you think about merging this one-line change and cutting a new hypothesis release? I fully realize it might sound a bit preposterous to ask for a release because of an unrelated change in a far far corner of your userspace. Still I've got to ask :-).

EDIT: now that I actually read the release policy, am adding the RELEASE.rst snippet. I'd guess there's not much need to precisely time this PR: hypothesis full well can recognize an upcoming array API version.

[Zac-HD]

I was a bit nervous about shipping this before upstream actually releases the standard, but I think it's worth avoiding awkward monkeypatches in the ecosystem and we don't need to make any substantive changes for updates anyway (cf #3901).

Thanks for the PR and your work on the array api standard, @ev-br!

[ev-br]

Wow, I did not expect this quick turnaround. Thank you @Zac-HD for the merge and for the hypothesis itself!