package/mpd: update to version 0.23.9

Mostly internal refactoring and some minor enhancements /fixes in features
cdio_paranoia, ffmpeg (support version 5.1), pipewire, replay gain.

Improve iconv detection.

Fix bogus volume levels with multiple partitions.
For partition support, version 0.23.9 or later is recommended.

Full change log:
	https://raw.githubusercontent.com/MusicPlayerDaemon/MPD/v0.23.9/NEWS



Tested on:
  i386    (build, run)
  x86_64  (build)
  aarch64 (build, run)

Signed-off-by: Andreas Ziegler <br015@umbiko.net>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>