Update Liquibase to 3.8.9

[php-coder]

• http://www.liquibase.org/2020/03/liquibase-3.8.8-released.html
• https://www.liquibase.org/2020/04/liquibase-3.8.9-released.html / https://github.com/liquibase/liquibase/releases/tag/v3.8.9