Add notifications for 2020-07-01
Add notifications for 2020-07-01

Based on instructions: https://docs.publishing.service.gov.uk/manual/updating-brexit-transition-checker.html#updates-to-actions

https://trello.com/c/W3dQWgIM/293-checker-actions-bulk-update?menu=filter

alphagov/finder-frontend,alphagov/finder-frontend,alphagov/finder-frontend,alphagov/finder-frontend