CCM-8590: fix pa11y import

Author: alexnuttall

tests/accessibility/actions/index.js

@@ -4,6 +4,7 @@ module.exports = {
   ...require('./preview-nhs-app-template.actions'),
   ...require('./submit-nhs-app-template.actions'),
   ...require('./create-text-message-template.actions'),
+  ...require('./create-letter-template.actions'),
   ...require('./preview-text-message-template.actions'),
   ...require('./submit-text-message-template.actions'),
   ...require('./text-message-template-submitted.actions'),