[3.x] CI: use prebuilt contribs if they are available
Same as !96 (merged) for 3.x
Draft until taglib is not patched anymore, otherwise the contribs built in the VLC repository don't match the ones built here.
Edited by Steve Lhomme
Same as !96 (merged) for 3.x
Draft until taglib is not patched anymore, otherwise the contribs built in the VLC repository don't match the ones built here.
VideoLAN code repository instance