package/fluidsynth: bump to version 2.2.0

For change log since v2.1.5, see:
- https://github.com/FluidSynth/fluidsynth/releases/tag/v2.1.6
- https://github.com/FluidSynth/fluidsynth/releases/tag/v2.1.7
- https://github.com/FluidSynth/fluidsynth/releases/tag/v2.1.8
- https://github.com/FluidSynth/fluidsynth/releases/tag/v2.2.0

./utils/test-pkg --package fluidsynth
6 builds, 2 skipped, 0 build failed, 0 legal-info failed

Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/fluidsynth/fluidsynth.hash

@@ -1,3 +1,3 @@
 # Locally computed
-sha256  b539b7c65a650b56f01cd60a4e83c6125c217c5a63c0c214ef6274894a677d00  fluidsynth-2.1.5.tar.gz
+sha256  928fb16f307507485bd1d9b010dafba8c747bce5de2ba47ab1705944c87013b6  fluidsynth-2.2.0.tar.gz
 sha256  9b872a8a070b8ad329c4bd380fb1bf0000f564c75023ec8e1e6803f15364b9e9  LICENSE

package/fluidsynth/fluidsynth.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-FLUIDSYNTH_VERSION = 2.1.5
+FLUIDSYNTH_VERSION = 2.2.0
 FLUIDSYNTH_SITE = $(call github,FluidSynth,fluidsynth,v$(FLUIDSYNTH_VERSION))
 FLUIDSYNTH_LICENSE = LGPL-2.1+
 FLUIDSYNTH_LICENSE_FILES = LICENSE