mosquitto: bump version

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/mosquitto/mosquitto.hash

@@ -1,2 +1,2 @@
 # Locally calculated after checking pgp signature
-sha256	5ebc3800a0018bfbec62dcc3748fb29f628df068acd39c62c4ef651d9276647e  mosquitto-1.4.2.tar.gz
+sha256	773d7436f729b5a6088035708c9277a9c6ba5651e127b63c8f29fe39e152479c  mosquitto-1.4.3.tar.gz

package/mosquitto/mosquitto.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-MOSQUITTO_VERSION = 1.4.2
+MOSQUITTO_VERSION = 1.4.3
 MOSQUITTO_SITE = http://mosquitto.org/files/source
 MOSQUITTO_LICENSE = EPLv1.0 or EDLv1.0
 MOSQUITTO_LICENSE_FILES = LICENSE.txt epl-v10 edl-v10