update: bump to v4.16.0

module/send_song.js

@@ -2,7 +2,7 @@
 
 module.exports = (query, request) => {
   query.cookie.os = 'ios'
-  query.cookie.appver = '8.20.21'
+  query.cookie.appver = '9.0.65'
   const data = {
     id: query.id,
     msg: query.msg || '',
@@ -12,6 +12,7 @@ module.exports = (query, request) => {
   return request('POST', `https://music.163.com/api/msg/private/send`, data, {
     crypto: 'api',
     cookie: query.cookie,
+    ua: query.ua || '',
     proxy: query.proxy,
     realIP: query.realIP,
   })