Bump minitest from 5.20.0 to 5.21.1

Bumps [minitest](https://github.com/minitest/minitest) from 5.20.0 to 5.21.1.
- [Changelog](https://github.com/minitest/minitest/blob/master/History.rdoc)
- [Commits](minitest/minitest@v5.20.0...v5.21.1)

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

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

Author: dependabot[bot]

Gemfile

@@ -7,7 +7,7 @@ gemspec
 
 # Specify development dependencies here
 gem "toys"
-gem "minitest", "~> 5.20", require: false
+gem "minitest", "~> 5.21", require: false
 gem "mocha", "~> 2.1.0", require: false
 gem "pry-sorbet", "~> 0.2", require: false
 gem "rubocop-shopify", require: false

Gemfile.lock

@@ -39,7 +39,7 @@ GEM
     json (2.7.1)
     language_server-protocol (3.17.0.3)
     method_source (1.0.0)
-    minitest (5.20.0)
+    minitest (5.21.1)
     mocha (2.1.0)
       ruby2_keywords (>= 0.0.5)
     mutex_m (0.2.0)
@@ -135,7 +135,7 @@ PLATFORMS
 DEPENDENCIES
   dotenv
   lunchmoney-ruby!
-  minitest (~> 5.20)
+  minitest (~> 5.21)
   mocha (~> 2.1.0)
   pry-sorbet (~> 0.2)
   rubocop-minitest