Bump minitest from 5.23.1 to 5.24.1 (#626)

Bumps [minitest](https://github.com/minitest/minitest) from 5.23.1 to 5.24.1.
- [Changelog](https://github.com/minitest/minitest/blob/master/History.rdoc)
- [Commits](https://github.com/minitest/minitest/compare/v5.23.1...v5.24.1)

---
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

@@ -100,7 +100,7 @@ GEM
     middleman-syntax (3.4.0)
       middleman-core (>= 3.2)
       rouge (~> 3.2)
-    minitest (5.23.1)
+    minitest (5.24.1)
     padrino-helpers (0.15.3)
       i18n (>= 0.6.7, < 2)
       padrino-support (= 0.15.3)