MIGRATION: Add processed_at to notifications

Author: rossta

db/migrate/20240720123745_add_processed_at_to_notifications.rb

@@ -0,0 +1,5 @@
+class AddProcessedAtToNotifications < ActiveRecord::Migration[7.1]
+  def change
+    add_column :notifications, :processed_at, :datetime
+  end
+end