Bump version to 2.5.0 and update copyright year

Change-Id: I7ad47c32935fc315ecb9c85048cff459b63e5c73
diff --git a/Readme.pod b/Readme.pod
index fe13a27..ba69e9f 100644
--- a/Readme.pod
+++ b/Readme.pod
@@ -245,7 +245,7 @@
 
 =head1 COPYRIGHT AND LICENSE
 
-Copyright (C) 2021-2023, L<IDS Mannheim|https://www.ids-mannheim.de/>
+Copyright (C) 2021-2024, L<IDS Mannheim|https://www.ids-mannheim.de/>
 
 Author: Peter Harders