fix: 修复 ARGS 为空时导致 rsync 执行错误问题。

由于 ARGS 非必填，当其为空时，报错：

⚠️ An error happened:(. Cannot read property 'match' of undefined TypeError: Cannot read property 'match' of undefined

src/index.js

@@ -140,7 +140,7 @@ const run = () => {
     sshDeploy.init({
         src: GITHUB_WORKSPACE + '/' + SOURCE || '',
         dest: TARGET || '/home/' + REMOTE_USER + '/',
-        args: [ARGS] || ['-rltgoDzvO'],
+        args: ARGS ? [ARGS] : ['-rltgoDzvO'],
         host: REMOTE_HOST,
         port: REMOTE_PORT || '22',
         username: REMOTE_USER,