Bump minitest from 5.20.0 to 5.22.3 (#80)

Bumps [minitest](https://github.com/minitest/minitest) from 5.20.0 to 5.22.3.
- [Changelog](https://github.com/minitest/minitest/blob/master/History.rdoc)
- [Commits](minitest/minitest@v5.20.0...v5.22.3)

---
updated-dependencies:
- dependency-name: minitest
  dependency-type: direct:development
  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>

Gemfile.lock

@@ -9,7 +9,7 @@ GEM
  remote: https://rubygems.org/
  specs:
  docile (1.4.0)
- minitest (5.20.0)
+ minitest (5.22.3)
  prettier_print (1.2.1)
  rake (13.2.1)
  simplecov (0.22.0)