shairport-sync: bump to version 3.1.6

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

package/shairport-sync/shairport-sync.hash

@@ -1,2 +1,2 @@
 # Locally calculated
-sha256  262808b4ae1a897837384b519ab8736e3189d45f147a31bf8327d313ab6d8e7f  shairport-sync-3.1.5.tar.gz
+sha256  90555f1a5e05bd777741147d5c0104543d0f26d4f95b9bfd44143c818a6f50f1  shairport-sync-3.1.6.tar.gz

package/shairport-sync/shairport-sync.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-SHAIRPORT_SYNC_VERSION = 3.1.5
+SHAIRPORT_SYNC_VERSION = 3.1.6
 SHAIRPORT_SYNC_SITE = $(call github,mikebrady,shairport-sync,$(SHAIRPORT_SYNC_VERSION))
 
 SHAIRPORT_SYNC_LICENSE = MIT, BSD-3-Clause