Bump the test-dependencies group with 2 updates

Bumps the test-dependencies group with 2 updates: [parallel_tests](https://github.com/grosser/parallel_tests) and [rake](https://github.com/ruby/rake).


Updates `parallel_tests` from 4.6.0 to 4.7.1
- [Changelog](https://github.com/grosser/parallel_tests/blob/master/CHANGELOG.md)
- [Commits](grosser/parallel_tests@v4.6.0...v4.7.1)

Updates `rake` from 13.1.0 to 13.2.1
- [Release notes](https://github.com/ruby/rake/releases)
- [Changelog](https://github.com/ruby/rake/blob/master/History.rdoc)
- [Commits](ruby/rake@v13.1.0...v13.2.1)

---
updated-dependencies:
- dependency-name: parallel_tests
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: test-dependencies
- dependency-name: rake
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: test-dependencies
...

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

Gemfile.lock

@@ -26,13 +26,13 @@ GEM
     moneta (1.0.0)
     multi_json (1.15.0)
     parallel (1.24.0)
-    parallel_tests (4.6.0)
+    parallel_tests (4.7.1)
       parallel
     platform-api (3.6.0)
       heroics (~> 0.1.1)
       moneta (~> 1.0.0)
       rate_throttle_client (~> 0.1.0)
-    rake (13.1.0)
+    rake (13.2.1)
     rate_throttle_client (0.1.2)
     rrrretry (1.0.0)
     rspec-core (3.13.0)