Bump rouge from 4.2.0 to 4.2.1

Bumps [rouge](https://github.com/rouge-ruby/rouge) from 4.2.0 to 4.2.1.
- [Release notes](https://github.com/rouge-ruby/rouge/releases)
- [Changelog](https://github.com/rouge-ruby/rouge/blob/master/CHANGELOG.md)
- [Commits](rouge-ruby/rouge@v4.2.0...v4.2.1)

---
updated-dependencies:
- dependency-name: rouge
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Gemfile.lock

@@ -517,7 +517,7 @@ GEM
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
     rexml (3.2.6)
-    rouge (4.2.0)
+    rouge (4.2.1)
     rspec-core (3.13.0)
       rspec-support (~> 3.13.0)
     rspec-expectations (3.13.0)