Upgrade FFmpeg to 5.1 on macOS.

In this version videos play fine with hardware acceleration enabled.

Telegram/SourceFiles/ffmpeg/ffmpeg_utility.h

@@ -19,8 +19,11 @@ extern "C" {
 #include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>
 #include <libswscale/swscale.h>
+#include <libavutil/version.h>
 } // extern "C"
 
+#define DA_FFMPEG_NEW_CHANNEL_LAYOUT (LIBAVUTIL_VERSION_MAJOR >= 59)
+
 class QImage;
 
 namespace FFmpeg {