reconsider ci runners to re-enable an aarch64 job

[travisstaloch]

currently, the macos ci job is running on an x86_64 machine. this changed sometime in the past few weeks or so from aarch64 to x86_64.

goal

revive macos aarch64 ci job or decide how best to test aarch64 code

notes

the job is set here:

jobs:
  build:
    runs-on: macos-latest

i did some searching for how to change this to use an aarch64 machine but didn't find anything.

found this https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners#supported-runners-and-hardware-resources

Runner image	YAML workflow label
macOS Monterey 12	macos-latest, macos-12, macos-latest-xl or macos-12-xl
macOS Big Sur 11	macos-11
macOS Catalina 10.15 [deprecated]	macos-10.15

questions

• what runner to use to test the aarch64 code?