Update lorawan package to fix NetID type 3 & 4 filtering.

Please see errata published by the LoRa Alliance:
https://lora-alliance.org/resource-hub/nwkid-length-fix-type-3-and-type-4-netids-errata-lorawan-backend-10-specification.

Author: brocaar

go.mod

@@ -4,7 +4,7 @@ go 1.12
 
 require (
 	github.com/brocaar/loraserver v0.0.0-20190729122155-2f0bb9c308bc
-	github.com/brocaar/lorawan v0.0.0-20190709091804-c3a80883a8fa
+	github.com/brocaar/lorawan v0.0.0-20190814113539-8eb2a8d6da09
 	github.com/dgrijalva/jwt-go v3.2.0+incompatible
 	github.com/eclipse/paho.mqtt.golang v1.2.0
 	github.com/golang/protobuf v1.3.2

go.sum

@@ -38,6 +38,8 @@ github.com/brocaar/loraserver v0.0.0-20190729122155-2f0bb9c308bc h1:bum9Ye6oZBx+
 github.com/brocaar/loraserver v0.0.0-20190729122155-2f0bb9c308bc/go.mod h1:nu05fgUCXdcEJQ7KJHMw5lHO5Efxq7j+g4r5g9PryhY=
 github.com/brocaar/lorawan v0.0.0-20190709091804-c3a80883a8fa h1:UcT94Q1RMA+lTAD0kxDY5RjkhagJgcoAjIKlKvs7A8o=
 github.com/brocaar/lorawan v0.0.0-20190709091804-c3a80883a8fa/go.mod h1:Fm+51pxK6mZoAQjIaWJqPmnRuXecozsM5Mf9c+kr/ko=
+github.com/brocaar/lorawan v0.0.0-20190814113539-8eb2a8d6da09 h1:hV+axbeTsoTCa1tEkXzDjucdg1GPSX9j1fn95saTKBo=
+github.com/brocaar/lorawan v0.0.0-20190814113539-8eb2a8d6da09/go.mod h1:Fm+51pxK6mZoAQjIaWJqPmnRuXecozsM5Mf9c+kr/ko=
 github.com/caarlos0/ctrlc v1.0.0 h1:2DtF8GSIcajgffDFJzyG15vO+1PuBWOMUdFut7NnXhw=
 github.com/caarlos0/ctrlc v1.0.0/go.mod h1:CdXpj4rmq0q/1Eb44M9zi2nKB0QraNKuRGYGrrHhcQw=
 github.com/campoy/unique v0.0.0-20180121183637-88950e537e7e h1:V9a67dfYqPLAvzk5hMQOXYJlZ4SLIXgyKIE+ZiHzgGQ=