Support running with multiple Maven versions

[kaklakariada]

The list of plugins generated in the changelog file and dependencies.md depends on the Maven version that is used for running PK fix / PK verify. Plugins not explicitly specified in the (parent) POM are used in the default versions specific to the Maven version. This leads to different versions depending on the Maven version.

Affected are the following plugins included by default. Maven 3.8.7 uses the following versions:

* Added `org.apache.maven.plugins:maven-clean-plugin:2.5`
* Added `org.apache.maven.plugins:maven-dependency-plugin:2.8`
* Added `org.apache.maven.plugins:maven-deploy-plugin:2.7`
* Added `org.apache.maven.plugins:maven-install-plugin:2.4`
* Added `org.apache.maven.plugins:maven-jar-plugin:2.4`
* Added `org.apache.maven.plugins:maven-resources-plugin:2.6`
* Added `org.apache.maven.plugins:maven-site-plugin:3.3`

Maven 3.9.9 uses these versions:

* Added `org.apache.maven.plugins:maven-clean-plugin:3.2.0`
* Added `org.apache.maven.plugins:maven-dependency-plugin:3.7.0`
* Added `org.apache.maven.plugins:maven-deploy-plugin:3.1.2`
* Added `org.apache.maven.plugins:maven-install-plugin:3.1.2`
* Added `org.apache.maven.plugins:maven-jar-plugin:3.4.1`
* Added `org.apache.maven.plugins:maven-resources-plugin:3.3.1`
* Added `org.apache.maven.plugins:maven-site-plugin:3.12.1`

Proposed solution:

PK should explicitly add these plugins with up-to-date versions and without configuration to the parent pom.

Workaround

Use Maven 3.8.x locally, don't upgrade to 3.9.x