ci cleanup

[henryiii]

Some suggested cleanup to build-wheels:

• Currently there are three test jobs and three wheel build jobs; now that there's a ci.yml, the test jobs are either no longer needed, or should be moved.
• The cibuildwheel and twine (should use the pypa publish action) should be moved out of a custom script and the action form should be used (can be pinned and updated with Dependabot, too)
• macos-13 (last Intel) and macOS-14 (first AS) images should be used.
• The custom arch stuff in pyproject.toml can then be removed, as native will work fine.

Also, "wheel" should not be listed in pyproject.toml, and backend = setuptools.build_meta is missing under [build-system].

See https://learn.scientific-python.org/development/guides/repo-review/?repo=thaler-lab%2FWasserstein&branch=master for other ideas.

[j-s-ashley]

To break this down into referenceable steps:

build-wheels.yml

• [x] Remove test jobs (#26)
• [x] Use GHA cibuildwheel instead of build-wheel script (#26)
• [ ] Use GHA pypa/publish (pending, #41)
• [ ] MacOS-14 support (pending, #48)

pyproject.toml

• [ ] After MacOS-14, remove custom architecture stuff (archs = "x86_64 arm64") (pending, #48)
• [x] Remove "wheel" (#25)
• [x] Add backend = setuptools.build_meta (#25)