Update years in LICENSE.rst

Author: peterjc

LICENSE.rst

@@ -1,4 +1,5 @@
-Copyright 2017-2021, Peter Cock, The James Hutton Institute, UK.
+Copyright 2017-2024, Peter Cock, The James Hutton Institute, UK.
+Copyright 2025, Peter Cock.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal