Build(deps-dev): Bump minitest from 5.16.2 to 5.16.3

Bumps [minitest](https://github.com/seattlerb/minitest) from 5.16.2 to 5.16.3.
- [Release notes](https://github.com/seattlerb/minitest/releases)
- [Changelog](https://github.com/minitest/minitest/blob/master/History.rdoc)
- [Commits](https://github.com/seattlerb/minitest/compare/v5.16.2...v5.16.3)

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

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

Gemfile.lock

@@ -249,7 +249,7 @@ GEM
     mini_sql (1.4.0)
     mini_suffix (0.3.3)
       ffi (~> 1.9)
-    minitest (5.16.2)
+    minitest (5.16.3)
     mocha (1.14.0)
     msgpack (1.5.4)
     multi_json (1.15.0)