Bump rouge from 3.30.0 to 4.0.0

Bumps [rouge](https://github.com/rouge-ruby/rouge) from 3.30.0 to 4.0.0.
- [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/v3.30.0...v4.0.0)

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

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

Gemfile.lock

@@ -111,10 +111,9 @@ GEM
     jekyll-commonmark (1.3.1)
       commonmarker (~> 0.14)
       jekyll (>= 3.7, < 5.0)
-    jekyll-commonmark-ghpages (0.1.6)
+    jekyll-commonmark-ghpages (0.1.0)
       commonmarker (~> 0.17.6)
-      jekyll-commonmark (~> 1.2)
-      rouge (>= 2.0, < 4.0)
+      jekyll-commonmark (~> 1)
     jekyll-feed (0.17.0)
       jekyll (>= 3.7, < 5.0)
     jekyll-gist (1.5.0)
@@ -215,7 +214,7 @@ GEM
       ffi (~> 1.0)
     regexp_parser (2.5.0)
     rexml (3.2.5)
-    rouge (3.30.0)
+    rouge (4.0.0)
     rubocop (1.36.0)
       json (~> 2.3)
       parallel (~> 1.10)