chore: update copyright end date

Signed-off-by: Luke Watts <luke@thisis.la>

Author: thisislawatts

index.html

@@ -431,7 +431,7 @@ <h3>Installation</h3>
             <div class="container">
                 <div class="row">
                     <div class="col-md-12">
-                        <p class="text-center">&copy; Copyright 2013-2023 The OWASP Foundation</p>
+                        <p class="text-center">&copy; Copyright 2013-2026 The OWASP Foundation</p>
                     </div>
                 </div>
             </div>