PP-13688 Fix Worldpay privacy policy link

In our privacy policy, update the link to Worldpay’s privacy policy
from the current URL (which no longer exists) to the new Worldpay
Privacy Center.

Author: alexbishop1

source/privacy.html.erb

@@ -36,7 +36,7 @@ title: Privacy notice
       </div>
       <div class="govuk-grid-column-two-thirds">
         <h1 class="govuk-heading-l" id="heading-1">Privacy notice</h1>
-        <p class="govuk-body-l">Last updated: 17 January 2023</p>
+        <p class="govuk-body-l">Last updated: 7 April 2025</p>
 
         <h2 class="govuk-heading-m" id="who-we-are">Who we are</h2>
         <p class="govuk-body">
@@ -166,11 +166,7 @@ title: Privacy notice
         </p>
         <ul class="govuk-list govuk-list--bullet">
           <li>
-            <%=
-              link_to 'Worldpay Privacy Policy',
-                      'https://www.fisglobal.com/-/media/fisglobal/files/pdf/policy/privacy/worldpay-privacy-notice-english.pdf?la=en',
-                      class: 'govuk-link'
-            %>
+            <%= link_to 'Worldpay Privacy Policy', 'https://privacy.worldpay.com/policies/en/', class: 'govuk-link' %>
           </li>
           <li>
             <%= link_to 'Stripe Privacy Policy', 'https://stripe.com/en-gb/privacy', class: 'govuk-link' %>