chore: Ban JUnit 4 imports (#95)

Author: strangelookingnerd

pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.jenkins-ci.plugins</groupId>
         <artifactId>plugin</artifactId>
-        <version>5.9</version>
+        <version>5.22</version>
         <relativePath />
     </parent>
 
@@ -14,6 +14,7 @@
         <jenkins.baseline>2.479</jenkins.baseline>
         <jenkins.version>${jenkins.baseline}.3</jenkins.version>
         <maven.javadoc.skip>true</maven.javadoc.skip>
+        <ban-junit4-imports.skip>false</ban-junit4-imports.skip>
         <violations.version>2.2.0</violations.version>
         <changelog-lib>2.6.0</changelog-lib>
         <changelog-plugin>2.2.5</changelog-plugin>