multimedia/smplayer: update to 23.6.0
- Fix the issue of YouTube playback limited to 720p.
- Update mpv and mplayer.
- New option in preferences to keep the playback speed for all videos.
- Fix the AppImage package.
- Other bug fixes.
Changelog: https://www.smplayer.info/changes
Approved by: arrowd (mentor, implicit)
MFH: 2023Q3