ostruct warning with ruby 3.4

[aandrieu]

Describe the bug

Hello 👋

a warning is now emitted when using the graphql lib with ruby 3.4.

/.rbenv/versions/3.4.1/lib/ruby/gems/3.4.0/gems/graphql-2.4.8/lib/graphql/subscriptions/serialize.rb:3: warning: /.rbenv/versions/3.4.1/lib/ruby/3.4.0/ostruct.rb was loaded from the standard library, but will no longer be part of the default gems starting from Ruby 3.5.0.
You can add ostruct to your Gemfile or gemspec to silence this warning.
Also please contact the author of graphql-2.4.8 to request adding ostruct into its gemspec.

Versions

graphql version: 2.4.8
rails (or other framework): 8.0.0
ruby: 3.4.1

Steps to reproduce

Install graphql lib with ruby 3.4.

Expected behavior

This warning should be cleaned.

Actual behavior

Warning raised.

[rmosolgo]

Hey, thanks for reporting this. I'll update the gemfile soon for the next release 👍