You can access the preview/govcms_update environment via the dashboard.
You will need to prioritise the checking of your preview, as this will alert you to any issues when 9.4 is applied to your site.
Ensure you check the functionality of your preview including theme, webforms and integration with external services. The Drupal Core change will not affect your site's content.
Reminder: This will not count towards your maximum number of environments in your project.
If there is functionality in the preview feature branch not working, consult your developers and if required,
advise the GovCMS team by raising a Service Desk ticket. We have also published preview branch support documentation in the Service Desk Knowledge Base.
We encourage PaaS customers to schedule this core upgrade as once Drupal Core 9.3.x reaches end of
life in December 2022 it will no longer be covered by Drupal Security.
If you have any concerns, raise a ticket at https://www.govcms.support