Handle the vulnerability in black duck report

Change-Id: Id4b96e8a25b14dbe057fc3595a9265fdda16622e
diff --git a/vendor/github.com/gorilla/mux/LICENSE b/vendor/github.com/gorilla/mux/LICENSE
index 6903df6..bb9d80b 100644
--- a/vendor/github.com/gorilla/mux/LICENSE
+++ b/vendor/github.com/gorilla/mux/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2012-2018 The Gorilla Authors. All rights reserved.
+Copyright (c) 2023 The Gorilla Authors. All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are