Bump parallel_tests from 3.12.1 to 3.13.0

Bumps [parallel_tests](https://github.com/grosser/parallel_tests) from 3.12.1 to 3.13.0.
- [Release notes](https://github.com/grosser/parallel_tests/releases)
- [Changelog](https://github.com/grosser/parallel_tests/blob/master/CHANGELOG.md)
- [Commits](https://github.com/grosser/parallel_tests/commits)

---
updated-dependencies:
- dependency-name: parallel_tests
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Gemfile.lock

@@ -685,7 +685,7 @@ GEM
       activerecord (>= 5.2)
       request_store (~> 1.1)
     parallel (1.22.1)
-    parallel_tests (3.12.1)
+    parallel_tests (3.13.0)
       parallel
     parser (3.1.2.1)
       ast (~> 2.4.1)