Log Message:
databases/ruby-awesome_nested_set: update to 3.2.1

Update ruby-awesome_nested_set to 3.2.1.

3.2.1
* Don't reload in after_save callback. [Petrik de Heus](https://github.com/p8)
* Fix deprecation warning "Passing a range to `#in` is deprecated". \ 
[Konstantin Mochalov](https://github.com/kolen)
* [Compare to \ 
3.2.0](https://github.com/collectiveidea/awesome_nested_set/compare/v3.2.0...v3.2.1)