For python 3.9+, we should be able to drop the specific numpy build requirements and use numpy>=1.25, which is currently backwards-compatible to numpy>=1.19.
In the future, the python <3.9 requirements could be dropped and the lower numpy pin could correspond to the oldest supported version for the current lower python pin.
Starting in numpy 1.25 (see https://github.com/numpy/numpy/releases/tag/v1.25.0), the numpy C API is backwards-compatible by default.
For python 3.9+, we should be able to drop the specific numpy build requirements and use
numpy>=1.25, which is currently backwards-compatible tonumpy>=1.19.In the future, the python <3.9 requirements could be dropped and the lower numpy pin could correspond to the oldest supported version for the current lower python pin.