Fix OpenStruct use in range_input_type

.rubocop_manual_todo.yml

@@ -2584,7 +2584,6 @@ Style/OpenStructUse:
     - 'spec/graphql/mutations/commits/create_spec.rb'
     - 'spec/graphql/mutations/merge_requests/accept_spec.rb'
     - 'spec/graphql/mutations/merge_requests/create_spec.rb'
-    - 'spec/graphql/types/range_input_type_spec.rb'
     - 'spec/helpers/application_settings_helper_spec.rb'
     - 'spec/helpers/profiles_helper_spec.rb'
     - 'spec/initializers/doorkeeper_spec.rb'

spec/graphql/types/range_input_type_spec.rb

@@ -24,7 +24,7 @@ RSpec.describe ::Types::RangeInputType do
 
   it 'follows expected subtyping relationships for instances' do
     context = GraphQL::Query::Context.new(
-      query: OpenStruct.new(schema: nil),
+      query: double('query', schema: nil),
       values: {},
       object: nil
     )