Bump minitest from 5.22.0 to 5.22.1

Bumps [minitest](https://github.com/minitest/minitest) from 5.22.0 to 5.22.1.
- [Changelog](https://github.com/minitest/minitest/blob/master/History.rdoc)
- [Commits](minitest/minitest@v5.22.0...v5.22.1)

---
updated-dependencies:
- dependency-name: minitest
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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

Gemfile.lock

@@ -132,7 +132,7 @@ GEM
     method_source (1.0.0)
     mini_mime (1.1.5)
     mini_portile2 (2.8.5)
-    minitest (5.22.0)
+    minitest (5.22.1)
     msgpack (1.7.2)
     mutex_m (0.2.0)
     net-imap (0.4.10)