DOC Add new MFA feature to changelog

Author: GuySartorelli

en/04_Changelogs/5.2.0.md

@@ -126,6 +126,7 @@ This will now fail by throwing an exception, which means your form won't render
 ### Other new features
 
 - A new [`SiteTree.hide_pagetypes`](api:SilverStripe\CMS\Model\SiteTree->hide_pagetypes) configuration property has been added. Unlike [`SiteTree.hide_ancestor`](api:SilverStripe\CMS\Model\SiteTree->hide_ancestor) (which has [now been deprecated](#api-silverstripe-cms)), this is an array. This allows you to define all page types that should be hidden in a single configuration property in your YAML configuration.
+- The [`silverstripe/mfa module`](https://github.com/silverstripe/silverstripe-mfa) now allows you to specify which groups can register MFA for their account.
 
 ## API changes