package/mosquitto: bump to v1.6.8

This is a bugfix release, see:
https://mosquitto.org/blog/2019/11/version-1-6-8-released/

Signed-off-by: Titouan Christophe <titouan.christophe@railnova.eu>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit b4a848e4f4418918eaa5402ff8403535d439c77f)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/mosquitto/mosquitto.hash

@@ -1,5 +1,5 @@
 # Locally calculated after checking gpg signature
-sha256 bcd31a8fbbd053fee328986fadd8666d3058357ded56b9782f7d4f19931d178e  mosquitto-1.6.7.tar.gz
+sha256 7df23c81ca37f0e070574fe74414403cf25183016433d07add6134366fb45df6  mosquitto-1.6.8.tar.gz
 
 # License files
 sha256 cc77e25bafd40637b7084f04086d606f0a200051b61806f97c93405926670bc1  LICENSE.txt

package/mosquitto/mosquitto.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-MOSQUITTO_VERSION = 1.6.7
+MOSQUITTO_VERSION = 1.6.8
 MOSQUITTO_SITE = https://mosquitto.org/files/source
 MOSQUITTO_LICENSE = EPL-1.0 or EDLv1.0
 MOSQUITTO_LICENSE_FILES = LICENSE.txt epl-v10 edl-v10