mpd: bump to version 0.20.21

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  a9e458c6e07cdf62649de7722e1e5a7f13aa82eeb397bfbbebc07cf5cf273584  mpd-0.20.20.tar.xz
+sha256  8322764dc265c20f05c8c8fdfdd578b0722e74626bef56fcd8eebfb01acc58dc  mpd-0.20.21.tar.xz
 sha256  ab15fd526bd8dd18a9e77ebc139656bf4d33e97fc7238cd11bf60e2b9b8666c6  COPYING

package/mpd/mpd.mk

@@ -5,7 +5,7 @@
 ################################################################################
 
 MPD_VERSION_MAJOR = 0.20
-MPD_VERSION = $(MPD_VERSION_MAJOR).20
+MPD_VERSION = $(MPD_VERSION_MAJOR).21
 MPD_SOURCE = mpd-$(MPD_VERSION).tar.xz
 MPD_SITE = http://www.musicpd.org/download/mpd/$(MPD_VERSION_MAJOR)
 MPD_DEPENDENCIES = host-pkgconf boost