[INTERNAL] Update copyright year to 2023

Author: matz3

.reuse/dep5

@@ -25,7 +25,7 @@ Disclaimer: The code in this project may include calls to APIs (“API Calls”)
  parties the right to use of access any SAP External Product, through API Calls.
 
 Files: *
-Copyright: 2016-2021 SAP SE or an SAP affiliate company and less-openui5 contributors
+Copyright: 2016-2023 SAP SE or an SAP affiliate company and less-openui5 contributors
 License: Apache-2.0
 
 Files: lib/thirdparty/less/*

LICENSE.txt

@@ -186,7 +186,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright 2021 SAP SE or an SAP affiliate company.
+   Copyright 2023 SAP SE or an SAP affiliate company.
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.