Wheels not available for MacOS ARM python 3.8 / 3.9

[AdamGlustein]

The current build process uses macos-14 native arm runner to build our arm wheels:

csp/.github/workflows/build.yml

Line 223 in 063b137

# mac arm builds support py3.10+

That limits the build to only python 3.8/3.9. Instead, we can remove the macos-14 arm runners and cross compile from x86 runners

csp/.github/workflows/build.yml

Line 291 in 063b137

CIBW_ARCHS_MACOS: x86_64