Bump junit from 4.13 to 4.13.1

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](https://github.com/junit-team/junit4/compare/r4.13...r4.13.1)

---
updated-dependencies:
- dependency-name: junit:junit
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/pom.xml b/pom.xml
index 67aee09..cc9b81f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -94,7 +94,7 @@
 
 
     <!-- test dependency version numbers -->
-    <junit-version>4.13</junit-version>
+    <junit-version>4.13.1</junit-version>
     <mockito-version>3.2.4</mockito-version>
     <hamcrest-version>2.2</hamcrest-version>
     <httpclient-version>4.5.3</httpclient-version>