Bump junit from 4.12 to 4.13 (#72)

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/main/doc/ReleaseNotes4.12.md)
- [Commits](junit-team/junit4@r4.12...r4.13)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]

pom.xml

@@ -37,7 +37,7 @@
     <jgitVersion>5.8.0.202006091008-r</jgitVersion>
     <jsonVersion>20160810</jsonVersion>
     <jsonUnitVersion>2.11.1</jsonUnitVersion>
-    <junitVersion>4.12</junitVersion>
+    <junitVersion>4.13</junitVersion>
     <junit5Version>5.6.2</junit5Version>
     <log4jVersion>2.7</log4jVersion>
     <mockitoVersion>1.10.19</mockitoVersion>