graphics/libskiasharp: unbundle libjpeg_turbo
With the upgrade, we now have a skia version which works with
libjpeg-turbo from ports[1].
Using the system libjpeg_turbo, seems to make jellyfin scan faster
the libraries. This also fixes some warning in the logs about jellyfin
"System.IO.InvalidDataException: Skia unable to read image"