Draft: Resolve "Fix bug in java-backend third party license step in ci pipeline"

Related issues

Closes #139

Acceptance criteria

• Implemented code changes don't diverge from the related issue.
• Version number is incremented according to SemVer. (Snapshot versions are not merged/released.)
• Only released versions of dependencies are used (i.e. no snapshot versions).
• Pipeline still works.
• GitLab issue is up-to-date.

Proposed squash commit message

Fix bug in java-backend third party license step in ci pipeline

• Remove usage of plugin com.mycila.icense-maven-plugin to avoid naming conflict with plugin org.codehaus.mojo.license-maven-plugin