Log Message:
fluidsynth: update to 2.2.8.

Fix pkglint.

* ALSA and WinMIDI drivers now pass system real-time messages on to user \ 
callback (#1115, thanks to @albedozero)
* Fix FPU division by zero in fluid_player_set_tempo() (#1111)
* Fix system-wide config file not loaded (#1118)
* Pluseaudio driver now honors audio.periods setting (#1127, thanks to @pedrolcl)