Bump rouge from 3.21.0 to 3.22.0 (#14234)

Bumps [rouge](https://github.com/rouge-ruby/rouge) from 3.21.0 to 3.22.0.
- [Release notes](https://github.com/rouge-ruby/rouge/releases)
- [Changelog](https://github.com/rouge-ruby/rouge/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rouge-ruby/rouge/compare/v3.21.0...v3.22.0)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile.lock

@@ -88,7 +88,7 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rexml (3.2.4)
-    rouge (3.21.0)
+    rouge (3.22.0)
     ruby-enum (0.8.0)
       i18n
     ruby2_keywords (0.0.2)