Spring boot starter database schema migration user

Hi,
We have two database users. One is `migration_user` , another is `application_user`.
We need to use `migration` user on database schema updates, migrations of flowable engine.
When application starts we need that flowable will start to use `application_user`.

Spring allows you to have liquibase datasource and main datasource, so it is easy to make.
But flowable does not have such functionality.
Could you please suggest something?

Thank you!