Add ostruct to gemspec for Ruby 3.5 compatibility#5208

tatematsu-k wants to merge 1 commit intormosolgo:masterrmosolgo/graphql-ruby:masterfrom

tatematsu-k:feature/add_ostruct_for_ruby_3_5tatematsu-k/graphql-ruby:feature/add_ostruct_for_ruby_3_5Copy head branch name to clipboard