Bump minitest from 5.27.0 to 6.0.0

Bumps [minitest](https://github.com/minitest/minitest) from 5.27.0 to 6.0.0.
- [Changelog](https://github.com/minitest/minitest/blob/master/History.rdoc)
- [Commits](minitest/minitest@v5.27.0...v6.0.0)

---
updated-dependencies:
- dependency-name: minitest
  dependency-version: 6.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -9,8 +9,10 @@ GEM
   remote: https://rubygems.org/
   specs:
     docile (1.4.0)
-    minitest (5.27.0)
+    minitest (6.0.0)
+      prism (~> 1.5)
     prettier_print (1.2.1)
+    prism (1.6.0)
     rake (13.3.1)
     simplecov (0.22.0)
       docile (~> 1.1)