Fix the if condition to skip test_ractor.rb correctly (#13067)
Follow-up for https://github.com/ruby/ruby/commit/a2b03ba7cb721d698bebee74c535dea4583a9c28
Fix the if condition to skip test_ractor.rb correctly (#13067)
Follow-up for https://github.com/ruby/ruby/commit/a2b03ba7cb721d698bebee74c535dea4583a9c28