Update RBI files

Library/Homebrew/extend/os/mac/unpack_strategy/zip.rbi

@@ -1,9 +1,5 @@
 # typed: strict
 
-module UnpackStrategy
-  class Zip
-    module MacOSZipExtension
+module UnpackStrategy::Zip::MacOSZipExtension
   include Kernel
 end
-  end
-end

Library/Homebrew/extend/pathname.rb

@@ -467,6 +467,7 @@ class Pathname
     []
   end
 
+  sig { returns(String) }
   def magic_number
     @magic_number ||= if directory?
       ""
@@ -477,11 +478,13 @@ class Pathname
     end
   end
 
+  sig { returns(String) }
   def file_type
     @file_type ||= system_command("file", args: ["-b", self], print_stderr: false)
                    .stdout.chomp
   end
 
+  sig { returns(T::Array[String]) }
   def zipinfo
     @zipinfo ||= system_command("zipinfo", args: ["-1", self], print_stderr: false)
                  .stdout

Library/Homebrew/unpack_strategy.rbi

@@ -3,14 +3,3 @@
 module UnpackStrategy
   include Kernel
 end
-
-class Pathname
-  sig { returns(String) }
-  def magic_number; end
-
-  sig { returns(String) }
-  def file_type; end
-
-  sig { returns(T::Array[String]) }
-  def zipinfo; end
-end