Bump test-unit from 3.6.1 to 3.6.2 (#396)

Bumps [test-unit](https://github.com/test-unit/test-unit) from 3.6.1 to 3.6.2.
- [Release notes](https://github.com/test-unit/test-unit/releases)
- [Commits](test-unit/test-unit@3.6.1...3.6.2)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Marcin Ciszak <marcin.ciszak@appvia.io>

Gemfile.lock

@@ -155,7 +155,7 @@ GEM
       racc
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    power_assert (2.0.3)
+    power_assert (2.0.4)
     profile (0.4.0)
     psych (5.1.2)
       stringio
@@ -239,7 +239,7 @@ GEM
       faraday-follow_redirects
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
-    test-unit (3.6.1)
+    test-unit (3.6.2)
       power_assert
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)