Merge pull request #160 from gocd-contrib/dependabot/gradle/junit-junit-4.13.2

Author: dependabot-preview[bot]

build.gradle

@@ -66,7 +66,7 @@ dependencies {
     compile group: 'commons-io', name: 'commons-io', version: '2.6'
     compile group: 'org.freemarker', name: 'freemarker', version: '2.3.31'
 
-    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.mockito', name: 'mockito-core', version: '3.3.0'
     testCompile group: 'org.skyscreamer', name: 'jsonassert', version: '1.5.0'