Bump minitest from 5.19.0 to 5.20.0 (#160)

Bumps [minitest](https://github.com/minitest/minitest) from 5.19.0 to 5.20.0.
- [Changelog](https://github.com/minitest/minitest/blob/master/History.rdoc)
- [Commits](minitest/minitest@v5.19.0...v5.20.0)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile

@@ -6,7 +6,7 @@ gemspec
 
 group :development do
   gem "byebug", "~> 11.1"
-  gem "minitest", "~> 5.19"
+  gem "minitest", "~> 5.20"
   gem "minitest-fail-fast", "~> 0.1"
   gem "minitest-macos-notification", "~> 1.0"
   gem "minitest-reporters", "~> 1.6"

Gemfile.lock

@@ -13,7 +13,7 @@ GEM
     byebug (11.1.3)
     json (2.6.3)
     language_server-protocol (3.17.0.3)
-    minitest (5.19.0)
+    minitest (5.20.0)
     minitest-fail-fast (0.1.0)
       minitest (~> 5)
     minitest-macos-notification (1.0.1)
@@ -63,7 +63,7 @@ PLATFORMS
 
 DEPENDENCIES
   byebug (~> 11.1)
-  minitest (~> 5.19)
+  minitest (~> 5.20)
   minitest-fail-fast (~> 0.1)
   minitest-macos-notification (~> 1.0)
   minitest-reporters (~> 1.6)