[<CI>] ffmpeg download stuck, temporarily bypass

[zzhangpurdue]

Initial Checks

• [X] I have searched GitHub for a duplicate issue and I'm sure this is something new
• [X] I have read and followed the docs & demos and still think this is a bug
• [X] I am confident that the issue is with modelscope-agent (not my code, or another library in the ecosystem)

What happened + What you expected to happen

downloading url is timeout ci workflow use a steady url.

Versions / Dependencies

latest

Reproduction script

wget -O ffmpeg.tar.xz https://johnvansickle.com/ffmpeg/builds/ffmpeg-git-amd64-static.tar.xz

Issue Severity

None

[zzhangpurdue]

#346 temporarily solution