[Feature Request]: Support Beam Python on macos arm64.

[tvalentyn]

What would you like to happen?

Suggested AIs:

• Build macosx arm64 wheels.
• Include a test suite once GitHub Actions: Apple Silicon (M1) powered macOS runners (Public Beta) github/roadmap#528 is available.
• Include M1 or equivalent platform into the release validation trix.

Issue Priority

Priority: 2 (default / most feature requests should be filed as P2)

Issue Components

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[nyoungstudios]

Not sure if it is better to wait for the GitHub Actions support, but there are other services that offer macOS Arm CI/CD runners. I have used Codemagic with good success. And CircleCI recently added macOS Arm support as well.

[tvalentyn]

actually we don't build arm64 wheels yet, unclear if we test this combination either.