readme: update copyright year

Author: kenranunderscore

README.md

@@ -525,7 +525,7 @@ in a browser window will then run the tests and display the results. After every
 
 ## License
 
-Copyright © 2014-2023 Active Group GmbH
+Copyright © 2014-2025 Active Group GmbH
 
 Distributed under the Eclipse Public License either version 1.0 or (at
 your option) any later version.