CI: Build musllinux aarch64 and x86_64 wheels, and native macOS arm64 wheels

[agriyakhetarpal]

Description

This PR addresses the following:

1. Adds macos-14 GitHub Actions runners to target macOS arm64 wheels natively, without cross-compilation
2. Configures the build_linux_aarch64_wheels and build_linux_x86_64_wheels jobs to include MUSL wheels (which were previously being skipped).

Footnotes

This PR:

1. closes Publish musllinux wheels again, and natively compile macOS arm64 wheels #718,
2. closes pywavelets fails to install on Alpine Linux v3.15 ARM #623, and
3. is a follow-up to Upload nightly wheels for PyWavelets to the Scientific Python Nightly Wheels index on Anaconda #710 and Upload dev builds for all supported platforms to anaconda.org #712.

[agriyakhetarpal]

This should be ready for review now, please check the logs here: https://github.com/agriyakhetarpal/pywt/actions/runs/8255410993/job/22581797957

All job produce a singleton wheel, except for the GNU/Linux jobs that produce two – both musllinux and manylinux wheels.

Edit: all jobs are passing!

[rgommers]

This all looks like it works as advertised, nice work @agriyakhetarpal. I only have a few minor comments for maintainability and future-proofing.

[agriyakhetarpal]

All wheels are getting built, please see this workflow run: https://github.com/agriyakhetarpal/pywt/actions/runs/8262339804

[rgommers]

Great! All looks good, so let's give it a go.