cjson: bump to version 1.5.6

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/cjson/cjson.hash

@@ -1,2 +1,2 @@
 # Locally computed:
-sha256 f131a3067c78603683f84759de31320444f58d859a77afa77fca858d92ceba60  cjson-v1.5.5.tar.gz
+sha256 0ab704247ddb85b65f860923db78013c1376b632785cc3cde77aacddbeac7778  cjson-v1.5.6.tar.gz

package/cjson/cjson.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-CJSON_VERSION = v1.5.5
+CJSON_VERSION = v1.5.6
 CJSON_SITE = $(call github,DaveGamble,cjson,$(CJSON_VERSION))
 CJSON_INSTALL_STAGING = YES
 CJSON_LICENSE = MIT