Merge pull request #242197 from viraptor/reaper-libs

reaper: use ffmpeg4

pkgs/top-level/all-packages.nix

···
 
   reaper = callPackage ../applications/audio/reaper {
     jackLibrary = libjack2; # Another option is "pipewire.jack".
+    ffmpeg = ffmpeg_4-headless;
   };
 
   recapp = callPackage ../applications/video/recapp { };