fix(ruby): sdk_id in resolve request is incorrect

[nicklasl]

The Ruby provider sets sdk.id to the string "SDK_ID_PYTHON_PROVIDER" instead of "SDK_ID_RUBY_PROVIDER".

https://github.com/spotify/confidence-resolver/blob/main/openfeature-provider/ruby/lib/confidence/openfeature/api_client.rb#L49

sdk: {id: "SDK_ID_PYTHON_PROVIDER", version: VERSION}

Should be:

sdk: {id: "SDK_ID_RUBY_PROVIDER", version: VERSION}