Support darwin arm64 binary [CI SKIP]

scripts/build

@@ -4,7 +4,7 @@ set -e
 source $(dirname $0)/version
 
 OS_ARCH_ARG_LINUX="amd64 arm arm64"
-OS_ARCH_ARG_DARWIN="amd64"
+OS_ARCH_ARG_DARWIN="amd64 arm64"
 
 LD_INJECT_VALUES="-X github.com/rancher/steve/pkg/version.Version=$VERSION
                   -X github.com/rancher/steve/pkg/version.GitCommit=$COMMIT"
@@ -40,7 +40,9 @@ else
 fi
 
 for f in $(ls ./bin/); do
-    upx -o $DAPPER_SOURCE/bin/$f bin/$f || true
+    if [[ $f != *darwin-arm64 ]]; then
+        upx -o $DAPPER_SOURCE/bin/$f bin/$f || true
+    fi
     if [ -f $DAPPER_SOURCE/bin/$f ]; then
         echo "UPX done!"
     else