Specifying source encoding.
Locking maven-site-plugin version.
Upgrading to latest m-checkstyle-p to fix a crash during site generation.
Locking maven-scm-plugin version.
Locking maven-docck-plugin version.
Locking maven-compiler-plugin version.
Locking maven-invoker-plugin version.
Locking maven-javadoc-plugin version.
Locking maven-jxr-plugin version.
Disable use of the plugin itself in its own reporting config.

Not sure it's even possible normally.
I suppose it was maybe working previously because Maven would download the
previous release from Central and yidiiiiyadaaaa.