[Bot] Update /streams

Committed by [iptv-bot](https://github.com/apps/iptv-bot) via [update](https://github.com/iptv-org/iptv/actions/runs/8515362254) workflow.

closes #16232

streams/cn.m3u

@@ -1589,3 +1589,5 @@ http://220.194.178.58:8888/newlive/live/hls/55/live.m3u8
 http://223.111.191.105/downflv.brtvcloud.com/kkkkasd/winfr.m3u8
 #EXTINF:-1 tvg-id="AndoTV.cn",Ando TV (576p)
 http://119.1.122.186:4022/rtp/238.255.2.189:5999
+#EXTINF:-1 tvg-id="XizangTVTibetan.cn",Xizang TV Tibetan
+http://140.249.247.163/1142f717c2e0326d526ab914ec68dd30.v.smtcdns.net/t-fjnetv51.live.bestvcdn.com.cn/live/program/live/xzwszy/2500000/mnf.m3u8