Bump mikepenz/action-junit-report from 4.1.0 to 4.2.1

Bumps [mikepenz/action-junit-report](https://github.com/mikepenz/action-junit-report) from 4.1.0 to 4.2.1.
- [Release notes](https://github.com/mikepenz/action-junit-report/releases)
- [Commits](mikepenz/action-junit-report@v4.1.0...v4.2.1)

---
updated-dependencies:
- dependency-name: mikepenz/action-junit-report
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/gradle.yml

@@ -51,7 +51,7 @@ jobs:
     - name: run tests && build project
       run: ./gradlew build --no-daemon --warning-mode all
 
-    - uses: mikepenz/action-junit-report@v4.1.0
+    - uses: mikepenz/action-junit-report@v4.2.1
       if: always()
       with:
         report_paths: 'build/test-results/test/TEST-*.xml'