Bump minitest from 5.25.1 to 5.25.2

Bumps [minitest](https://github.com/minitest/minitest) from 5.25.1 to 5.25.2.
- [Changelog](https://github.com/minitest/minitest/blob/master/History.rdoc)
- [Commits](https://github.com/minitest/minitest/commits)

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

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -148,7 +148,7 @@ GEM
       net-smtp
     marcel (1.0.4)
     mini_mime (1.1.5)
-    minitest (5.25.1)
+    minitest (5.25.2)
     mocha (2.5.0)
       ruby2_keywords (>= 0.0.5)
     msgpack (1.7.5)