embdedded must be fixed to embedded on https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-2.5-Release-Notes#warning-for-users-of-schemasql-and-datasql-files
This means that schema.sql and data.sql scripts are now applied to the primary datasource, regardless of whether it is embdedded or not.
Comment From: snicoll
@KyeongMoon good catch, thank you.