While universal2 wheels can be built on x86_64, the arm64 part of the wheel cannot be tested on x86_64. Consider building universal2 wheels on an arm64 runner, if your CI provider offers this. Notably, an arm64 runner can also test the x86_64 part of the wheel, through Rosetta emulation. To silence this warning, set `CIBW_TEST_SKIP: "*-macosx_universal2:arm64"`.

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v3, actions/upload-artifact@v3. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.