Merge pull request #222 from ruby-syntax-tree/dependabot/bundler/rouge-4.2.1

Bump rouge from 4.2.0 to 4.2.1

Author: github-actions[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)