devel/ruby2ruby: update to 2.4.4

Update ruby2ruby to 2.4.4.

=== 2.4.4 / 2019-09-24

* 1 bug fix:

  * Fixed deprecation warnings from patterns change in sexp_processor.

=== 2.4.3 / 2019-06-03

* 4 bug fixes:

  * Added shadow block args. (jaynetics)
  * Fixed generation for block args w/ trailing commas.
  * Fixed nested masgn block args and arrays. (jaynetics)
  * Fixes for stabby proc / lambda changes.

(taca)