Ruby: rename one of the PostsController2 classes

These had the same name and ended up being unified

Author: asgerf

ruby/ql/test/library-tests/frameworks/ActionController.expected

@@ -6,6 +6,7 @@ actionControllerControllerClasses
 | active_record/ActiveRecord.rb:41:1:64:3 | BarController |
 | active_record/ActiveRecord.rb:66:1:98:3 | BazController |
 | active_record/ActiveRecord.rb:100:1:108:3 | AnnotatedController |
+| active_storage/active_storage.rb:39:1:45:3 | PostsController2 |
 | app/controllers/comments_controller.rb:1:1:40:3 | CommentsController |
 | app/controllers/foo/bars_controller.rb:3:1:46:3 | BarsController |
 | app/controllers/photos_controller.rb:1:1:4:3 | PhotosController |

ruby/ql/test/library-tests/frameworks/active_storage/active_storage.rb

@@ -36,7 +36,7 @@ class Post < ActiveRecord::Base
 
 ActiveStorage.variant_processor = custom_processor
 
-class PostsController < ActionController::Base
+class PostsController2 < ActionController::Base
   def create
     post = Post.new(params[:post])
     post.images.attach(params[:images])