```ruby
namespace :publishing_api do
  desc "Publish special routes such as sitemaps"
  task :publish_special_routes do
    require 'gds_api/publishing_api/special_route_publisher'

    publisher = GdsApi::PublishingApi::SpecialRoutePublisher.new(logger: Logger.new(STDOUT))

    routes = [
      {
        base_path: "/sitemap.xml",
        content_id: "fee32a90-397a-4761-9f98-b06e47d2b798",
        title: "GOV.UK sitemap index",
        description: "Provides the locations of the GOV.UK sitemaps.",
        type: "exact",
      },
      {
        base_path: "/sitemaps",
        content_id: "c202c6a5-656c-40d1-ae55-36fab995709c",
        title: "GOV.UK sitemaps prefix",
        description: "The prefix URL under which our XML sitemaps are located.",
        type: "prefix",
      },
    ]

    routes.each do |route|
      publisher.publish(route.merge(
        format: "special_route",
        publishing_app: "rummager",
        rendering_app: "frontend",
        public_updated_at: Time.now.iso8601,
        update_type: "major",
      ))
    end
  end
end

desc "Temporary alias of publishing_api:publish_special_routes for backward compatibility"
task "router:register" => "publishing_api:publish_special_routes"
```

Fix rendering app for the sitemaps.
user
```ruby
namespace :publishing_api do
  desc "Publish special routes such as sitemaps"
  task :publish_special_routes do
    require 'gds_api/publishing_api/special_route_publisher'

    publisher = GdsApi::PublishingApi::SpecialRoutePublisher.new(logger: Logger.new(STDOUT))

    routes = [
      {
        base_path: "/sitemap.xml",
        content_id: "fee32a90-397a-4761-9f98-b06e47d2b798",
        title: "GOV.UK sitemap index",
        description: "Provides the locations of the GOV.UK sitemaps.",
        type: "exact",
      },
      {
        base_path: "/sitemaps",
        content_id: "c202c6a5-656c-40d1-ae55-36fab995709c",
        title: "GOV.UK sitemaps prefix",
        description: "The prefix URL under which our XML sitemaps are located.",
        type: "prefix",
      },
    ]

    routes.each do |route|
      publisher.publish(route.merge(
        format: "special_route",
        publishing_app: "rummager",
        rendering_app: "rummager",
        public_updated_at: Time.now.iso8601,
        update_type: "major",
      ))
    end
  end
end

desc "Temporary alias of publishing_api:publish_special_routes for backward compatibility"
task "router:register" => "publishing_api:publish_special_routes"
```
assistant