Reorder #audit_min_os array for consistency

This change doesn't affect the behavior of the `#audit_min_os`
method and simply reorders the array members to place `plist_min_os`
before `sparkle_min_os` for the sake of consistency (using the same
order as the preceding lines).

Library/Homebrew/cask/audit.rb

@@ -574,7 +574,7 @@ def audit_min_os
       debug_messages << "Plist #{plist_min_os}" if plist_min_os
       debug_messages << "Sparkle #{sparkle_min_os}" if sparkle_min_os
       odebug "Minimum OS version: #{debug_messages.join(" | ")}" unless debug_messages.empty?
-      min_os = [sparkle_min_os, plist_min_os].compact.max
+      min_os = [plist_min_os, sparkle_min_os].compact.max
 
       return if min_os.nil? || min_os <= HOMEBREW_MACOS_OLDEST_ALLOWED