fix: update java license plugin to latest version

What does this MR do?

This MR will update the license plugin for java gradle.plugin.com.hierynomus.gradle.plugins:license to latest version: 0.16.1

Reason

Version 0.15.0 has issues with certain gradle versions; it can cause a java.lang.AbstractMethodError. This happens when a gradle version of 7.x+ is used with gradlew.

More information: https://github.com/hierynomus/license-gradle-plugin/issues/193

What are the relevant issue numbers?

NONE

Does this MR meet the acceptance criteria?

• Changelog entry added
• Documentation created/updated for GitLab EE, if necessary
• Documentation created/updated for this project, if necessary
• Documentation reviewed by technical writer or follow-up review issue created
• Tests added for this feature/bug
• Job definition updated, if necessary
  • Job definition example
  • CI Templates (to be removed)
  • Vendored CI Templates (also in CE)
  • Ensure that all of the ENV vars supported are propagated to Docker containers upon docker run in job definitions
• Conforms to the code review guidelines
• Security reports checked/validated by reviewer