Log Message:
devel/ruby-rspec-its: update to 1.3.0

### 1.3.0 / 2019-04-09
[full changelog](http://github.com/rspec/rspec-its/compare/v1.2.0...v1.3.0)

Enhancements:
* Introduced `will` and `will_not` as to allow one line block expectations.
  (Russ Buchanan, #67)