Bump junit from 4.12 to 4.13.1 in /combined-pom

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](https://github.com/junit-team/junit4/compare/r4.12...r4.13.1)

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

combined-pom/pom.xml

diff --git a/combined-pom/pom.xml b/combined-pom/pom.xml
index 45f51e5..9e5b1d6 100644
--- a/combined-pom/pom.xml
+++ b/combined-pom/pom.xml
@@ -101,7 +101,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
     </dependencies>