* Ensure the upgrade notification request for the latest release, which can be disabled via the `WAGTAIL_ENABLE_UPDATE_CHECK` sends the referrer origin with `strict-origin-when-cross-origin` (Karl Hobley)
* On the Locked Pages report, limit the "locked by" filter to just users who have locked pages (Stefan Hammer)
* Ensure Python 3.10 compatibility when using Elasticsearch backend (Przemysław Buczkowski, Matt Westcott)