doc: Updated net/mosquitto to 1.6.6

Author: gdt

doc/CHANGES-2019

@@ -1,4 +1,4 @@
-$NetBSD: CHANGES-2019,v 1.3958 2019/09/18 11:31:25 adam Exp $
+$NetBSD: CHANGES-2019,v 1.3959 2019/09/18 13:03:10 gdt Exp $
 
 Changes to the packages collection and infrastructure in 2019:
 
@@ -6498,3 +6498,4 @@ Changes to the packages collection and infrastructure in 2019:
 	Added devel/lua-thrift version 0.12.0 [adam 2019-09-18]
 	Added devel/p5-thrift version 0.12.0 [adam 2019-09-18]
 	Added devel/thrift version 0.12.0 [adam 2019-09-18]
+	Updated net/mosquitto to 1.6.6 [gdt 2019-09-18]