APS 1.9.x currently has the embedded spring-boot version 1.5.10, which is an old version. A customer has developed extensions with spring-boot 2.1.3 as per their requirement. They are requesting the next APS release to include a later spring-boot version too, e.g. 2.1.3.
Business case: Customer did not provide any kind of vulnerabilities with the current Spring Boot version, the main problem is to meet requirements and work with a later if not the latest version.