Bump minitest from 5.18.1 to 5.20.0

Bumps [minitest](https://github.com/minitest/minitest) from 5.18.1 to 5.20.0.
- [Changelog](https://github.com/minitest/minitest/blob/master/History.rdoc)
- [Commits](minitest/minitest@v5.18.1...v5.20.0)

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

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

Gemfile

@@ -5,7 +5,7 @@ source "https://rubygems.org"
 gemspec
 
 gem "activejob", ">= 6.1", "< 8.0"
-gem "minitest", "~> 5.18"
+gem "minitest", "~> 5.20"
 gem "pry", "~> 0.14"
 gem "rake", "~> 13.0"
 gem "rubocop", "~> 1.54"

Gemfile.lock

@@ -25,7 +25,7 @@ GEM
     json (2.6.3)
     language_server-protocol (3.17.0.3)
     method_source (1.0.0)
-    minitest (5.18.1)
+    minitest (5.20.0)
     parallel (1.23.0)
     parser (3.2.2.3)
       ast (~> 2.4.1)
@@ -67,7 +67,7 @@ PLATFORMS
 DEPENDENCIES
   activejob (>= 6.1, < 8.0)
   haku!
-  minitest (~> 5.18)
+  minitest (~> 5.20)
   pry (~> 0.14)
   rake (~> 13.0)
   rubocop (~> 1.54)