Fix Ruby 2.7 warnings in spec/support/helpers/graphql_helpers.rb

Signed-off-by: Rémy Coutable <remy@rymai.me>

spec/support/helpers/graphql_helpers.rb

@@ -23,7 +23,7 @@ module GraphqlHelpers
 
     return early_return unless ready
 
-    resolver.resolve(args)
+    resolver.resolve(**args)
   end
 
   # Eagerly run a loader's named resolver