Workaround for Parser 3.2.2.2 or lower with Ruby 3.3.0dev

Follow up ruby/ruby#7877.

Ruby 3.3.0dev is set to promote Racc to a bundled gem. Therefore,
this PR provides a workaround for Parser 3.2.2.2 or lower with Ruby
3.3.0dev to prevents the Ruby 3.3.0dev CI matrix error from rubocop.

refs: rubocop/rubocop#11941

Gemfile

@@ -20,6 +20,11 @@ gem 'tempfile'
 gem "prime"
 gem "rdoc", "~> 6.4.0"
 
+# FIXME: Workaround for Parser 3.2.2.2 or lower with Ruby 3.3.0dev.
+# When the Praser gem releases a new version of Racc that includes the runtime dependencies,
+# it will be able to upgrade the Parser gem dependency and remove the workaround.
+gem 'racc', '>= 1.6.2'
+
 # Test gems
 gem "rbs-amber", path: "test/assets/test-gem"
 

Gemfile.lock

@@ -40,6 +40,7 @@ GEM
     psych (4.0.6)
       stringio
     public_suffix (5.0.1)
+    racc (1.7.0)
     rainbow (3.1.1)
     rake (13.0.6)
     rake-compiler (1.2.2)
@@ -104,6 +105,7 @@ DEPENDENCIES
   json-schema
   minitest
   prime
+  racc (>= 1.6.2)
   rake
   rake-compiler
   rbs!