www/ruby-rack-protection: update to 2.0.4

2.0.4 / 2018-09-15

* Don't blow up when passing frozen string to send_file disposition #1137 by
  Andrew Selder

* Fix ubygems LoadError #1436 by Pavel Rosick箪

* Unescape regex captures #1446 by Jordan Owens

* Slight performance improvements for IndifferentHash #1427 by Mike Pastore

* Improve development support and documentation and source code by Will Yang,
  Jake Craige, Grey Baker and Guilherme Goettems Schneider

2.0.3 / 2018-06-09

* Fix the backports gem regression #1442 by Marc-Andr辿 Lafortune

2.0.2 / 2018-06-05

* Escape invalid query parameters #1432 by Kunpei Sakai

o The patch fixes CVE-2018-11627.

* Fix undefined method error for Sinatra::RequiredParams with hash key #1431
  by Arpit Chauhan

* Add xml content-types to valid html_types for Rack::Protection #1413 by
  Reenan Arbitrario

* Encode route parameters using :default_encoding setting #1412 by Brian
  m. Carlson

* Fix unpredictable behaviour from Sinatra::ConfigFile #1244 by John Hope

* Add Sinatra::IndifferentHash#slice #1405 by Shota Iguchi

* Remove status code 205 from drop body response #1398 by Shota Iguchi

* Ignore empty captures from params #1390 by Shota Iguchi

* Improve development support and documentation and source code by Zp Yuan,
  Andreas Finger, Olle Jonsson, Shota Iguchi, Nikita Bulai and Joshua O'Brien

(taca)