Support `numpy >= 2.0` and `astropy >= 6.0`

[fiftymillionfeltcapfanscantbewrong]

Hi tess-asteroids team! Thanks for making this project available to the community.

The current dependency pins (numpy = "^1.26.4", astropy = "^5.3.4") restrict numpy to <2.0 and astropy to <6.0. This makes tess-asteroids incompatible with packages that require numpy 2+ (e.g., jax >= 0.4.30, jorbit >= 1.0), since they cannot coexist in the same environment.

Would it be feasible to test against numpy 2.x and astropy 6+/7+ and relax these upper bounds? Additionally, it would be helpful to be able to use newer python versions than 3.12.

Thanks, N