package/mosquitto: bump version to 1.6.13

Includes a number of bugfixes.  For details, see the announcement:
https://mosquitto.org/blog/2021/02/version-2-0-7-released/

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

package/mosquitto/mosquitto.hash

@@ -1,6 +1,6 @@
 # Locally calculated after checking gpg signature
-# from https://mosquitto.org/files/source/mosquitto-1.6.12.tar.gz.asc
-sha256  548d73d19fb787dd0530334e398fd256ef3a581181678488a741a995c4f007fb  mosquitto-1.6.12.tar.gz
+# from https://mosquitto.org/files/source/mosquitto-1.6.13.tar.gz.asc
+sha256  ce205248dd323e4e562ff83e9e84d0f9a16f4bda87183c367c66a7163c0fc287  mosquitto-1.6.13.tar.gz
 
 # License files
 sha256  cc77e25bafd40637b7084f04086d606f0a200051b61806f97c93405926670bc1  LICENSE.txt

package/mosquitto/mosquitto.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-MOSQUITTO_VERSION = 1.6.12
+MOSQUITTO_VERSION = 1.6.13
 MOSQUITTO_SITE = https://mosquitto.org/files/source
 MOSQUITTO_LICENSE = EPL-1.0 or EDLv1.0
 MOSQUITTO_LICENSE_FILES = LICENSE.txt epl-v10 edl-v10