PP-12053 Change accessibility statement updated date to 28 October

Change the last updated date of the accessibility statement to 28
October 2024 since that’s the date the revised version actually
went live.

source/accessibility-statement.html.erb

@@ -127,7 +127,7 @@ title: Accessibility statement for GOV.UK Pay
         <p class="govuk-body">
           Our <%= link_to 'roadmap', 'roadmap', class: 'govuk-link' %> includes information about how and when we plan to improve accessibility on this service.
         </p>
-        <p class="govuk-body">This page was created on 10 September 2019. It was last updated on 24 October 2024.</p>
+        <p class="govuk-body">This page was created on 10 September 2019. It was last updated on 28 October 2024.</p>
       </div>
     </div>
   </main>