package/mpd: bump to version 0.21.23

Changelog:
https://raw.githubusercontent.com/MusicPlayerDaemon/MPD/v0.21.23/NEWS

Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/mpd/mpd.hash

@@ -1,3 +1,3 @@
 # Locally calculated after checking pgp signature
-sha256  565687d1899b585350cd66b603e46e5b79affc0a0e36d96d8953c6ccc6f69ba2  mpd-0.21.22.tar.xz
+sha256  439f522ca9800f375e4fb459ec31e61b3d824fc5c0580ff06dac48b5d21207a3  mpd-0.21.23.tar.xz
 sha256  ab15fd526bd8dd18a9e77ebc139656bf4d33e97fc7238cd11bf60e2b9b8666c6  COPYING

package/mpd/mpd.mk

@@ -5,7 +5,7 @@
 ################################################################################
 
 MPD_VERSION_MAJOR = 0.21
-MPD_VERSION = $(MPD_VERSION_MAJOR).22
+MPD_VERSION = $(MPD_VERSION_MAJOR).23
 MPD_SOURCE = mpd-$(MPD_VERSION).tar.xz
 MPD_SITE = http://www.musicpd.org/download/mpd/$(MPD_VERSION_MAJOR)
 MPD_DEPENDENCIES = host-pkgconf boost