WordPress Cluster 9.6.11

• MU plugins updated:
  • template-parts
    • wpc_get_attachment_caption amended to adhere to priority in PhpDoc comment
    • Priorities: Caption Override, Caption, Syndicate Caption.
• Plugins updated:
  • Syndicate Subscriber 1.3.8
  • Added a last resort attempt to get Caption from Syndicate Site

PR: https://github.com/dc-thomson/wordpress/pull/3541
Jira: https://dcthomson.atlassian.net/browse/CORE-2530