[obs-studio/f36] (8 commits) ...Use qt6 for rawhide only

Summary of changes: 30a17ad... - Rebuilt for https://fedoraproject.org/wiki/Fedora_37_Mass (*) 44ecc3c... Trying to fix ffmpeg 5.1 build issue. (*) 4aec616... Apply ffmpeg workaround only for F37+. (*) 1ba0cdb... Added upstream patch with ffmpeg 5 fix. (*) 8732143... Update to 28.0.1 (*) 5c782b5... touch the missing sub-modules instead (*) 265c7d3... Fix wrong svg names (*) ae3957c... Use qt6 for rawhide only (*) (*) This commit already existed in another branch; no separate mail sent