fixing aron runtime warning

source/RobotAPI/libraries/armem_laser_scans/client/common/Writer.cpp

@@ -80,7 +80,7 @@ namespace armarx::armem::laser_scans::client
         toAron(laserScan, timestamp, frame, agentName, aronSensorData);
 
         auto dict = aronSensorData.toAron();
-        dict->addElement("scan", toAron(laserScan));
+        dict->addElementCopy("scan", toAron(laserScan));
 
         update.instancesData = {dict};
         update.referencedTime = timestamp;