Fix parent version in pom

[walterxie]

Consider Using a Fixed Parent Version and Control Flexibility Elsewhere:

In practice, you may want to fix the parent POM version and manage flexibility at the dependency level (where version ranges are supported). For example:

• Use a fixed version for the parent POM to ensure consistency in build settings and plugin management.
• Use version ranges for dependencies within the project to allow flexibility for specific libraries.

[walterxie]

import the BOM.

In larger projects, the approach of inheritance is not efficient because the project can inherit only a single parent. Importing is the alternative as we can import as many BOMs as we need.

https://www.baeldung.com/spring-maven-bom