undo strict racc dependency on this branch

.github/workflows/ruby.yml

@@ -17,7 +17,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby_version: [3.3, 3.2, 3.1, 3.0, jruby]
+        ruby_version: [3.3, 3.2, 3.1, '3.0', jruby]
         gemfile:
           - Gemfile
           - gemfiles/Gemfile.rails-6.0.x
@@ -26,10 +26,12 @@ jobs:
           - gemfiles/Gemfile.rails-7.1.x
           - gemfiles/Gemfile.rails-main
         exclude:
+          # Ruby 3.0 is not supported by Rails main (requires at least Ruby 3.1)
+          - ruby_version: '3.0'
+            gemfile: gemfiles/Gemfile.rails-main
           # JRuby is not supported by Rails 7.0.x
           - ruby_version: jruby
             gemfile: gemfiles/Gemfile.rails-7.0.x
-
           # JRuby is not supported by Rails main
           - ruby_version: jruby
             gemfile: gemfiles/Gemfile.rails-main

i18n.gemspec

@@ -27,6 +27,4 @@ Gem::Specification.new do |s|
   s.required_ruby_version = '>= 2.3.0'
 
   s.add_dependency 'concurrent-ruby', '~> 1.0'
-  s.add_dependency 'racc', '~> 1.7'
-
 end