When attempting to use org.jenkins-ci.plugins:git:3.9.1 as a mvn dep, I'm getting the following error from maven-enforcer-plugin:3.0.0-M1:enforce:

[INFO] — maven-enforcer-plugin:3.0.0-M1:enforce (display-info) @ google-kubernetes-engine —
[INFO] Ignoring requireUpperBoundDeps in com.google.guava:guava
[WARNING] Rule 6: org.apache.maven.plugins.enforcer.RequireUpperBoundDeps failed with message:
Failed while enforcing RequireUpperBoundDeps. The error(s) are [
Require upper bound dependencies error for org.jenkins-ci.plugins:junit:1.2 paths to dependency are:
+-org.jenkins-ci.plugins:google-kubernetes-engine:1.0-SNAPSHOT
+-org.jenkins-ci.plugins:git:3.9.1
+-org.jenkins-ci.plugins:matrix-project:1.7.1
+-org.jenkins-ci.plugins:junit:1.2
and
+-org.jenkins-ci.plugins:google-kubernetes-engine:1.0-SNAPSHOT
+-org.jenkins-ci.plugins:git:3.9.1
+-org.jenkins-ci.plugins:mailer:1.18
+-org.jenkins-ci.plugins:display-url-api:0.2
+-org.jenkins-ci.plugins:junit:1.3
]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------