fix(install): handle aarch64 -> arm64 (#19)

when running "act" (local github actions: https://github.com/nektos/act) on m1 macs the container arch for arm64 is "aarch64".

Author: petermm

scripts/install.sh

@@ -19,6 +19,7 @@ main() {
 
   case "$arch" in
   x86_64) arch="x64" ;;
+  aarch64) arch="arm64" ;;
   arm64) ;;
   *) echo "Unsupported architecture: $arch"; exit 1 ;;
   esac