Log Message:
devel/ruby-backports: update to 3.17.1

Update ruby-backports to 3.17.1.

## [3.17.1](https://github.com/marcandre/backports/compare/v3.17.0...v3.17.1) - \ 
2020-04-09

### Fixed

Fix Range#size (Ruby 2.0) on Ruby 1.8.7 [#144]