chore(deps): bump rouge from 3.27.0 to 3.28.0 (#322)

Bumps [rouge](https://github.com/rouge-ruby/rouge) from 3.27.0 to 3.28.0.
- [Release notes](https://github.com/rouge-ruby/rouge/releases)
- [Changelog](https://github.com/rouge-ruby/rouge/blob/master/CHANGELOG.md)
- [Commits](rouge-ruby/rouge@v3.27.0...v3.28.0)

---
updated-dependencies:
- dependency-name: rouge
  dependency-type: indirect
  update-type: version-update:semver-minor
...

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

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

Author: dependabot[bot]

Gemfile.lock

@@ -149,7 +149,7 @@ GEM
     reverse_markdown (2.1.1)
       nokogiri
     rexml (3.2.5)
-    rouge (3.27.0)
+    rouge (3.28.0)
     rss (0.2.9)
       rexml
     rubocop (1.25.1)