Fix typecheck.

Library/Homebrew/cli/args.rbi

@@ -273,6 +273,9 @@ module Homebrew
       sig { returns(T.nilable(String)) }
       def appdir; end
 
+      sig { returns(T.nilable(String)) }
+      def keyboard_layoutdir; end
+
       sig { returns(T.nilable(String)) }
       def fontdir; end
 

Library/Homebrew/sorbet/rbi/hidden-definitions/hidden.rbi

@@ -3007,6 +3007,10 @@ class Cask::Config
 
   def internet_plugindir=(path); end
 
+  def keyboard_layoutdir(); end
+
+  def keyboard_layoutdir=(path); end
+
   def mdimporterdir(); end
 
   def mdimporterdir=(path); end
@@ -6554,6 +6558,8 @@ class RuboCop::Cask::AST::Stanza
 
   def internet_plugin?(); end
 
+  def keyboard_layout?(); end
+
   def language?(); end
 
   def livecheck?(); end