Set copyright date to 2025

Author: KhronosWebservices

index.html

@@ -605,7 +605,7 @@ <h2>Other</h2>
                     </div>
                 </div>
                 <div class="copyright">
-                    &copy; The Khronos<sup>®</sup> Group Inc. 2021. All rights reserved.
+                    &copy; The Khronos<sup>®</sup> Group Inc. 2025. All rights reserved.
                 </div>
             </div>
         </footer>