devel/ruby-rspec_junit_formatter: update to 0.4.1

Update ruby-rspec_junit_formatter to 0.4.1.

0.4.1 (2018-05-30)

Fixed

* Diff ANSI stripping now works for codes with multiple tags, too.

0.4.0 (2018/05/26)

Added

* Add support for including STDOUT and STDERR from tests in the JUnit output
  (see "Capturing output" in the readme for details).

Fixed

* When RSpec includes a diff in its output, strip out ANSI escape codes used
  to color it for shell display.

(taca)