Merge pull request #16 from gocd-contrib/dependabot/gradle/junit-junit-4.13.2

Author: dependabot-preview[bot]

build.gradle

@@ -53,7 +53,7 @@ dependencies {
     compile group: 'com.google.guava', name: 'guava', version: '23.0'
     compile group: 'org.apache.commons', name: 'commons-lang3', version: '3.9'
 
-    testCompile group: 'junit', name: 'junit', version: '4.13'
+    testCompile group: 'junit', name: 'junit', version: '4.13.2'
     testCompile group: 'org.hamcrest', name: 'hamcrest-library', version: '2.2'
     testCompile group: 'org.skyscreamer', name: 'jsonassert', version: '1.5.0'
     testCompile group: 'cd.go.plugin', name: 'go-plugin-api', version: project.pluginDesc.goCdVersion