Update to use the new release build process from Mercury
>>> [!note] Migrated issue
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<!-- Migrated from issue #3591761. -->
Reported by: [pameeela](https://www.drupal.org/user/1431110)
Related to !23
>>>
<p>Mercury is updated to build the theme assets automatically on release. We should do the same here so we can add the libraries directly to the theme.</p>
issue