Bump mocha from 2.4.0 to 2.4.1

Bumps [mocha](https://github.com/freerange/mocha) from 2.4.0 to 2.4.1.
- [Changelog](https://github.com/freerange/mocha/blob/main/RELEASE.md)
- [Commits](freerange/mocha@v2.4.0...v2.4.1)

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

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

Gemfile.lock

@@ -234,7 +234,7 @@ GEM
       builder
       minitest (>= 5.0)
       ruby-progressbar
-    mocha (2.4.0)
+    mocha (2.4.1)
       ruby2_keywords (>= 0.0.5)
     msgpack (1.7.2)
     mutex_m (0.2.0)