Added arm64 to SUPPORTED_EDGE_CLUSTER_ARCH

[joewxboy]

Pull Request Template

Description

Just modified that one env var to add arm64. Found no other lines to change.

Fixes #3740

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

...

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have checked my code and corrected any misspellings
• I have tagged the reviewers in a comment below incase my pull request is ready for a review
• I have signed the commit message to agree to Developer Certificate of Origin (DCO) (to certify that you wrote or otherwise have the right to submit your contribution to the project.) by adding "--signoff" to my git commit command.

@LiilyZhang and @dlarson04 this was a tiny change.