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] <[email protected]>

Author: dependabot[bot]

Gemfile.lock

@@ -7,7 +7,7 @@ GEM
     prettier_print (1.2.1)
     rake (13.1.0)
     rexml (3.2.5)
-    rouge (4.2.0)
+    rouge (4.2.1)
     syntax_tree (6.2.0)
       prettier_print (>= 1.2.0)
     test-unit (3.6.2)