Bump junit from 4.13 to 4.13.1 in /istack-commons

Bumps [junit](https://github.com/junit-team/junit4) from 4.13 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@r4.13...r4.13.1)

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

istack-commons/pom.xml

@@ -79,7 +79,7 @@
         <activation.version>2.0.0</activation.version>
         <maven.api.version>3.6.3</maven.api.version>
         <resolver.version>1.4.2</resolver.version>
-        <junit.version>4.13</junit.version>
+        <junit.version>4.13.1</junit.version>
         <ant.version>1.10.8</ant.version>
         <codemodel.version>3.0.0-M4</codemodel.version>
         <plexus-utils.version>3.3.0</plexus-utils.version>