Reference RuboCop issue.

Library/Homebrew/utils/formatter.rb

@@ -110,7 +110,10 @@ module Formatter
   end
 
   def comma_and(*items)
-    *items, last = items.map(&:to_s) # rubocop:disable Lint/ShadowedArgument, TODO: Remove when RuboCop 0.57.3 is released.
+    # TODO: Remove when RuboCop 0.57.3 is released.
+    # False positive has been fixed and merged, but is not yet in a
+    # stable release: https://github.com/rubocop-hq/rubocop/pull/6038
+    *items, last = items.map(&:to_s) # rubocop:disable Lint/ShadowedArgument
     return last if items.empty?
 
     "#{items.join(", ")} and #{last}"