Bump junit from 4.8.1 to 4.13.1 in /examples

Bumps [junit](https://github.com/junit-team/junit4) from 4.8.1 to 4.13.1.
- [Release notes](https://github.com/junit-team/junit4/releases)
- [Changelog](https://github.com/junit-team/junit4/blob/main/doc/ReleaseNotes4.13.1.md)
- [Commits](junit-team/junit4@r4.8.1...r4.13.1)

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

Author: dependabot[bot]

examples/pom.xml

@@ -141,7 +141,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.8.1</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
     </dependencies>