Ban JUnit 4 imports (#182)

Author: strangelookingnerd

pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.jenkins-ci.plugins</groupId>
         <artifactId>plugin</artifactId>
-        <version>5.19</version>
+        <version>5.21</version>
         <relativePath />
     </parent>
 
@@ -37,6 +37,7 @@
         <jenkins.baseline>2.479</jenkins.baseline>
         <jenkins.version>${jenkins.baseline}.1</jenkins.version>
         <gitHubRepo>jenkinsci/${project.artifactId}-plugin</gitHubRepo>
+        <ban-junit4-imports.skip>false</ban-junit4-imports.skip>
     </properties>
 
     <repositories>