feat: Specify wrapper version (or latest)

[reneleonhardt]

Feature

In addition to the wrapped Maven distribution

• -Dmaven=3.9.6 or
• -Dmvnd=0.9.0

support specifying the wrapper version itself with

• -Dversion=3.3.1

This allows using/replacing the wrapper with a specific version, or updating it to

• -Dversion=latest

for example to retrieve (security) fixes or use new features.

If a project doesn't want to commit the maven-wrapper.jar, but cache it in a GitHub Action after the automatic download:

mvn -N wrapper:wrapper -Dversion=latest -Dtype=script

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