Bump mikepenz/action-junit-report from 3 to 4

Bumps [mikepenz/action-junit-report](https://github.com/mikepenz/action-junit-report) from 3 to 4.
- [Release notes](https://github.com/mikepenz/action-junit-report/releases)
- [Commits](mikepenz/action-junit-report@v3...v4)

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

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

.github/workflows/fastlane-tests.yml

@@ -19,7 +19,7 @@ jobs:
     - name: Run tests
       run: bundle exec fastlane test
     - name: Publish Test Report
-      uses: mikepenz/action-junit-report@v3
+      uses: mikepenz/action-junit-report@v4
       if: always() # always run even if the previous step fails
       with:
         report_paths: 'fastlane/test_output/report.junit'