Fix log level in frontend not updating after setting log level. https://github.com/Koenkk/zigbee2mqtt/issues/5635

lib/util/logger.js

@@ -133,7 +133,7 @@ logger.cleanup = cleanup;
 logger.logOutput = logOutput;
 logger.getLevel = () => transportsToUse[0].level;
 logger.setLevel = (level) => {
-    transportsToUse.forEach((transport) => transport.level = level);
+    logger.transports.forEach((transport) => transport.level = level);
 };
 
 // winston.config.syslog.levels doesnt have warn, but is required for syslog.