chore: update copyright year in README

Author: rektide

README.md

@@ -99,7 +99,7 @@ Restify aims to support the Node.js LTS (Active and Maintenance) versions along
 
 The MIT License (MIT)
 
-Copyright (c) 2018 restify
+Copyright (c) 2022 restify
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal in