fix: more reliable check of module is included (#1418)

handle gems like GraphQL which override `include?`

```
rake aborted!
ArgumentError: wrong number of arguments (given 1, expected 3)
gems/graphql-2.0.13/lib/graphql/schema/directive.rb:58:in `include?'
```

lib/tasks/check_upgrade.rake

@@ -9,7 +9,7 @@ namespace :jsonapi do
     task :check_upgrade => :environment do
       Rails.application.eager_load!
 
-      resource_klasses = ObjectSpace.each_object(Class).select { |klass| klass.include?(JSONAPI::ResourceCommon)}
+      resource_klasses = ObjectSpace.each_object(Class).select { |klass| klass.included_modules.include?(JSONAPI::ResourceCommon)}
 
       puts "Checking #{resource_klasses.count} resources"