Resources:
- https://www.callicoder.com/spring-boot-flyway-database-migration-example/
- https://www.baeldung.com/database-migrations-with-flyway
- Section 85.5 from: https://docs.spring.io/spring-boot/docs/current/reference/html/howto-database-initialization.html
- https://devcenter.heroku.com/articles/running-database-migrations-for-java-apps