jansson: bump to 2.6

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/jansson/jansson.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-JANSSON_VERSION = 2.5
+JANSSON_VERSION = 2.6
 JANSSON_SITE = http://www.digip.org/jansson/releases
 JANSSON_LICENSE = MIT
 JANSSON_LICENSE_FILES = LICENSE