Bump junit from 4.13 to 4.13.2 (#311)

Bumps [junit](https://github.com/junit-team/junit4) from 4.13 to 4.13.2.
- [Release notes](https://github.com/junit-team/junit4/releases)
- [Changelog](https://github.com/junit-team/junit4/blob/main/doc/ReleaseNotes4.13.2.md)
- [Commits](https://github.com/junit-team/junit4/compare/r4.13...r4.13.2)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

buildsystem/dependencies.gradle

@@ -43,7 +43,7 @@ ext.versions = [
         leakcanary        : '2.4',
 
         // Testing.
-        junit             : '4.13',
+        junit             : '4.13.2',
         truth             : '1.0',
         mockito           : '3.12.4',
         mockitoKotlin     : '2.2.0',