Update RBI files for unparser.

Library/Homebrew/sorbet/rbi/gems/unparser@0.6.1.rbi

@@ -1,9 +1,9 @@
+# typed: true
+
 # DO NOT EDIT MANUALLY
 # This is an autogenerated file for types exported from the `unparser` gem.
 # Please instead update this file by running `bin/tapioca gem unparser`.
 
-# typed: true
-
 module Unparser
   class << self
     def buffer(source, identification = T.unsafe(nil)); end
@@ -1489,6 +1489,8 @@ module Unparser::NodeHelpers
   def n_if?(node); end
   def n_in_pattern?(node); end
   def n_int?(node); end
+  def n_kwarg?(node); end
+  def n_kwargs?(node); end
   def n_kwsplat?(node); end
   def n_lambda?(node); end
   def n_match_rest?(node); end