Use File.read over IO.read

Library/Homebrew/dev-cmd/bottle.rb

@@ -567,7 +567,7 @@ module Homebrew
 
   def parse_json_files(filenames)
     filenames.map do |filename|
-      JSON.parse(IO.read(filename))
+      JSON.parse(File.read(filename))
     end
   end
 

Library/Homebrew/dev-cmd/pr-upload.rb

@@ -91,7 +91,7 @@ module Homebrew
     odie "No bottle JSON files found in the current working directory" if json_files.empty?
 
     bottles_hash = json_files.reduce({}) do |hash, json_file|
-      hash.deep_merge(JSON.parse(IO.read(json_file)))
+      hash.deep_merge(JSON.parse(File.read(json_file)))
     end
 
     if args.root_url