chore: updated year in readme

Author: maximizeIT

README.MD

@@ -74,7 +74,7 @@ $ npm start
 
 ## License
 
-Copyright 2017-2023 Staffbase GmbH.
+Copyright 2017-2024 Staffbase GmbH.
 
 Licensed under the Apache License, Version 2.0: https://www.apache.org/licenses/LICENSE-2.0