```ruby
require "csv"

namespace :db do
  namespace :data do
    desc "Run all data migrations"
    task :migrate => :environment do
      Whitehall::DataMigrator.new.run
    end
  end
end
```

Update data migrator task description
user
```ruby
require "csv"

namespace :db do
  namespace :data do
    desc "Run all data migrations, or a specific version assigned to environment variable VERSION"
    task :migrate => :environment do
      Whitehall::DataMigrator.new.run
    end
  end
end
```
assistant