fix: changed date

Author: mitulgolakiya

adminlte-stubs/layouts/app.blade.php

@@ -76,7 +76,7 @@ class="img-circle elevation-2"
         <div class="float-right d-none d-sm-block">
             <b>Version</b> 3.0.5
         </div>
-        <strong>Copyright &copy; 2014-2020 <a href="https://adminlte.io">AdminLTE.io</a>.</strong> All rights
+        <strong>Copyright &copy; 2014-2022 <a href="https://adminlte.io">AdminLTE.io</a>.</strong> All rights
         reserved.
     </footer>
 </div>