Bump decoder to 1.5.5 (#1699)

Filter the new attribute mac to avoid creating discovery sensor for it

main/ZgatewayBT.ino

@@ -1122,7 +1122,7 @@ void launchBTDiscovery(bool overrideDiscovery) {
                               Gateway_AnnouncementMsg, will_Message, false, subjectMQTTtoBTset,
                               model.c_str(), brand.c_str(), model_id.c_str(), macWOdots.c_str(), false,
                               stateClassNone, "off", "on");
-            } else if (strcmp(prop.key().c_str(), "device") != 0) {
+            } else if (strcmp(prop.key().c_str(), "device") != 0 || strcmp(prop.key().c_str(), "mac") != 0) { // Exception on device and mac as these ones are not sensors
               createDiscovery("sensor",
                               discovery_topic.c_str(), entity_name.c_str(), unique_id.c_str(),
                               will_Topic, prop.value()["name"], value_template.c_str(),