Bump junit:junit from 4.12 to 4.13.1

Bumps [junit: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)

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

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/pom.xml b/pom.xml
index 46479b0..5a20ea1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -44,7 +44,7 @@
     <javax.ws.rs-api.version>2.1</javax.ws.rs-api.version>
     <swagger.version>2.0.10</swagger.version>
     <swagger-codegen.version>2.4.3</swagger-codegen.version>
-    <junit.version>4.12</junit.version>
+    <junit.version>4.13.1</junit.version>
     <asm.version>7.2</asm.version>
     <powermock.version>1.6.2</powermock.version>
     <javachassis.version>1.2.0</javachassis.version>