Bump junit from 4.11 to 4.13.2

Bumps [junit](https://github.com/junit-team/junit4) from 4.11 to 4.13.2.
- [Release notes](https://github.com/junit-team/junit4/releases)
- [Changelog](https://github.com/junit-team/junit4/blob/main/doc/ReleaseNotes4.11.md)
- [Commits](junit-team/junit4@r4.11...r4.13.2)

---
updated-dependencies:
- dependency-name: junit:junit
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

build.gradle

@@ -39,7 +39,7 @@ dependencies {
     implementation('org.apache.commons:commons-lang3:3.5')
     api('org.springframework:spring-core:5.2.9.RELEASE')
 
-    testImplementation('junit:junit:4.11')
+    testImplementation('junit:junit:4.13.2')
 
     grape('org.apache.commons:commons-math3:3.4.1')
 }