Upgrade to numpy 2.x

[BwL1289]

Right now numpy is pinned to 1.26.4, which is over a year old. 2.0 offers significant modernization and performance improvements.

[chimaerase]

This might be another opportunity to consider modernizing dependency management

[jamesmyatt]

Pinning exact versions especially for libraries (rather than applications) doesn't work with Python's dependency management. It's a practice that comes from Javascript, which has an entirely different system. See https://iscinumpy.dev/post/bound-version-constraints/.