Update Copyright year.

2023-01-19 14:05:47 +02:00 · 2023-01-19 14:05:47 +02:00 · 46169b4790
--- a/LICENSE.md
+++ b/LICENSE.md
@ -1,4 +1,4 @@
-Copyright © 2015-2019 Progress Software Corporation and/or one of its subsidiaries or affiliates. All rights reserved.
+Copyright © 2015-2023 Progress Software Corporation and/or one of its subsidiaries or affiliates. All rights reserved.

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.