Add Racc as a development dependency

In ruby/rdoc#1019 RDoc starts embedding Racc. But Racc in Ruby 3.3 will not be a default gem anymore, which requires explicit declaration in Gemfile.
ruby · Nov 6, 2023 · a18b5fc · a18b5fc
1 parent 97a2b86
commit a18b5fc
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/Gemfile b/Gemfile
@@ -17,3 +17,5 @@ gem "rake"
 gem "test-unit"
 gem "test-unit-ruby-core"
 gem "debug", github: "ruby/debug"
+
+gem "racc"