+ Add gem ostruct as dependency for ruby 3.5+

Author: PikachuEXE

roadie-rails.gemspec

@@ -30,6 +30,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "rspec-collection_matchers"
   spec.add_development_dependency "rspec-rails"
   spec.add_development_dependency "standard"
+  spec.add_development_dependency "ostruct"
 
   spec.post_install_message = "This would be the last version that supports ruby 2.7"
 end