Bump junit from 4.12 to 4.13 (#194)

Bumps [junit](https://github.com/junit-team/junit4) from 4.12 to 4.13.
- [Release notes](https://github.com/junit-team/junit4/releases)
- [Changelog](https://github.com/junit-team/junit4/blob/master/doc/ReleaseNotes4.12.md)
- [Commits](junit-team/junit4@r4.12...r4.13)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

pom.xml

@@ -61,7 +61,7 @@
 	<properties>
 		<jdk.version>1.8</jdk.version>
 		<jbehave.version>4.6.1</jbehave.version>
-		<junit.version>4.12</junit.version>
+		<junit.version>4.13</junit.version>
 		<mockito.version>3.2.4</mockito.version>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 	</properties>