Update lib/internal/logger/serializers.js

Co-authored-by: Yagiz Nizipli <[email protected]>

Author: mertcanaltin

lib/internal/logger/serializers.js

@@ -63,7 +63,7 @@ function req(req) {
 function res(res) {
   return {
     statusCode: res.statusCode,
-    headers: res.getHeaders ? res.getHeaders() : res.headers,
+    headers: res.getHeaders?.() ?? res.headers,
   };
 }