[packman] update codecs one-click-install

[Olaf Hering]

On Sat, Nov 16, Marguerite Su wrote:

> I think maybe it's time to update our one-click-install file for codecs?

I think yes. With 13.1 and gnome.ymp these packages are not
automatically installed for me:

 gstreamer-plugins-bad 1.2.1
 gstreamer-plugins-libav 1.2.0

As a result mp4 videos from ZDF Mediathek can not be played.
Does it work out-of-the-box for anyone else?

Olaf