ci: enable gh actions with arm64

[glimchb]

Today with #303 we doing snapshot based testing

We discussed in several PRs and Issues how to enhance that and add real ci/cd with gh actions.

GH Actions doesn't support aarch64 today, unfortunately:

• Support Linux ARM64 build images actions/runner-images#5631 (comment)

So try to do QEMU maybe, although... see - actions/runner-images#183

Another approach is to run 1 single ci job for ARM64 only on https://www.travis-ci.com/

[jaypipes]

Another approach is to run 1 single ci job for ARM64 only on https://www.travis-ci.com/

Yeah, I've moved ghw off of Travis and strictly on to GH Actions about a year or so ago... I'd like to keep it that way for simplicity reasons. I will follow that ARM64 issue for runner-images.