Updated copyright year in index.html

This is a trivial change to test the automated build

Author: jonblower

index.html

@@ -105,6 +105,6 @@ <h5 class="list-group-item-heading"><img src="/img/GitHub-Mark-64px.png" width=3
 <div class="container footer">
   <hr>
   <p>
-    Copyright &copy; 2015-2024 The University of Reading.
+    Copyright &copy; 2015-2026 The University of Reading.
   </p>
 </div>