Update mqtt broker

Signed-off-by: tkl <tkl@barsch.fritz.box>

main.go

@@ -47,7 +47,7 @@ func main() {
 
 	// MQTT connection
 	opts := mqtt.NewClientOptions()
-	opts.AddBroker("tcp://nuc:1883")
+	opts.AddBroker("tcp://p5:1883")
 	opts.SetClientID("saunaservice")
 	opts.SetDefaultPublishHandler(messagePubHandler)
 	opts.OnConnect = connectHandler