Add urgent scope and by_version method to SoftwareUpdate (#33470)

app/models/software_update.rb

@@ -18,6 +18,8 @@ class SoftwareUpdate < ApplicationRecord
 
   enum :type, { patch: 0, minor: 1, major: 2 }, suffix: :type
 
+  scope :urgent, -> { where(urgent: true) }
+
   def gem_version
     Gem::Version.new(version)
   end
@@ -35,6 +37,10 @@ class SoftwareUpdate < ApplicationRecord
       Rails.configuration.x.mastodon.software_update_url.present?
     end
 
+    def by_version
+      all.sort_by(&:gem_version)
+    end
+
     def pending_to_a
       return [] unless check_enabled?