Merge pull request #156 from gocd-contrib/dependabot/gradle/junit-junit-4.13.2

Author: dependabot-preview[bot]

build.gradle

@@ -56,7 +56,7 @@ dependencies {
     compile group: 'com.squareup.okhttp3', name: 'okhttp', version: '4.4.0'
 
     testCompile group: 'cd.go.plugin', name: 'go-plugin-api', version: '17.4.0'
-    testCompile group: 'junit', name: 'junit', version: '4.13'
+    testCompile group: 'junit', name: 'junit', version: '4.13.2'
     testCompile group: 'org.mockito', name: 'mockito-core', version: '3.2.4'
     testCompile group: 'org.hamcrest', name: 'hamcrest-library', version: '2.2'
     testCompile group: 'org.skyscreamer', name: 'jsonassert', version: '1.5.0'