Build using numpy 2

[molpopgen]

• depend on numpy >= 2
• follow what tskit does

[molpopgen]

We can't make progress until we have an msprime release supporting numpy 2. See tskit-dev/msprime#2286 and tskit-dev/msprime#2287

We also need to decide what to do re: supporting numpy 1.x and 2 at the same time or just jumping to 2.x only.

[benjeffery]

We can't make progress until we have an msprime release supporting numpy 2. See tskit-dev/msprime#2286 and tskit-dev/msprime#2287

We also need to decide what to do re: supporting numpy 1.x and 2 at the same time or just jumping to 2.x only.

Working on those today.
We are supporting both - it seems binaries compiled with 2 can be used by recent versions of 1.XX.

[molpopgen]

We can't make progress until we have an msprime release supporting numpy 2. See tskit-dev/msprime#2286 and tskit-dev/msprime#2287
We also need to decide what to do re: supporting numpy 1.x and 2 at the same time or just jumping to 2.x only.

Working on those today. We are supporting both - it seems binaries compiled with 2 can be used by recent versions of 1.XX.

I (believe that I) am installing numpy >= 2 for all tasks in this PR, which is the likely problem. I need to do some homework re: compiling to support both in a module generated using pybind11.