fix: improve error serialization check in serializeErr function

Author: mertcanaltin

lib/internal/logger/serializers.js

@@ -6,7 +6,7 @@
  * @returns {object}
  */
 function serializeErr(error) {
-  if (!error || typeof error !== 'object') {
+  if (!Error.isError(error)) {
     return error;
   }