Make an Apple Silicon release too

[markshep-wbg]

Support Apple Silicon Too

Adds another binary to the releases which targets ARM64 Darwin (Apple Silicon).

How to use

make release

Testing done

Ran make release and made sure the executable ran on my Apple Silicon machine.

[jepio]

Thx - you can also use the ct container:

ct() {
    docker run -i --rm ghcr.io/flatcar-linux/ct "$@"
}

ct <input.yaml | tee output.json