Bump junit from 4.12 to 4.13.1 (#177)

Bumps [junit](https://github.com/junit-team/junit4) from 4.12 to 4.13.1.
- [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...r4.13.1)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pom.xml

@@ -289,7 +289,7 @@
         <jersey-version>2.29.1</jersey-version>
         <jackson-version>2.10.1</jackson-version>
         <maven-plugin-version>1.0.0</maven-plugin-version>
-        <junit-version>4.12</junit-version>
+        <junit-version>4.13.1</junit-version>
         <oltu-version>1.0.2</oltu-version>
     </properties>
 </project>