Log Message:
lang/ruby25-base: updateo to 2.5.5

Update ruby25{,-base} to 2.5.5.

Quote from release announce:

Ruby 2.5.4 (2019-03-13)

This release includes bug fixes and a security update of the bundled
RubyGems. See details in Multiple vulnerabilities in RubyGems and the commit
logs.

Ruby 2.5.5 (2019-03-15)

This release includes a bug fix for the deadlock in the
multi-thread+multi-process (using Process.fork) applications (ex: puma).