Correct GOV.UK Frontend version in JS import

Author: AP-Hunt

support/pipeline-visualiser/views/layout.erb

@@ -118,7 +118,7 @@
   <script type="module">
     import {
       initAll
-    } from '/javascript/govuk-frontend-5.3.0.min.js'
+    } from '/javascript/govuk-frontend-5.8.0.min.js'
     initAll()
   </script>
 </body>