chore: Upgrade to Rails 7 (#6719)

fixes: #6736

config/application.rb

@@ -30,7 +30,7 @@ end
 module Chatwoot
   class Application < Rails::Application
     # Initialize configuration defaults for originally generated Rails version.
-    config.load_defaults 6.0
+    config.load_defaults 7.0
 
     config.eager_load_paths << Rails.root.join('lib')
     config.eager_load_paths << Rails.root.join('enterprise/lib')
@@ -51,7 +51,7 @@ module Chatwoot
     # https://stackoverflow.com/questions/72970170/upgrading-to-rails-6-1-6-1-causes-psychdisallowedclass-tried-to-load-unspecif
     # https://discuss.rubyonrails.org/t/cve-2022-32224-possible-rce-escalation-bug-with-serialized-columns-in-active-record/81017
     # FIX ME : fixes breakage of installation config. we need to migrate.
-    config.active_record.yaml_column_permitted_classes = [HashWithIndifferentAccess]
+    config.active_record.yaml_column_permitted_classes = [ActiveSupport::HashWithIndifferentAccess]
   end
 
   def self.config