Remove references to com.day.jcr.vault:content-package-maven-plugin

### Expected Behaviour

the dependency to the content-package-maven-plugin should be removed. It's functionality has been replaced by the filevault-package-maven-plugin

### Actual Behaviour

the reference is present, but unused.

Search the archetype's Maven configuration for references to com.day.jcr.vault:content-package-maven-plugin, then inspect the surrounding dependency or plugin declarations. Done means the unused reference is removed, the file uses the replacement where needed, and the project still builds successfully.

Written by the indexing model from the issue text.