feat: support aarch64 in get script (#3656)

Author: deimosfr

scripts/get.sh

@@ -18,6 +18,7 @@ esac
 case "$(uname -m)" in
 x86_64) arch="amd64" ;;
 armv8*) arch="arm64" ;;
+aarch64) arch="arm64" ;;
 armv*) arch="arm" ;;
 i386) arch="386" ;;
 *)