Bump rspec-rails from 3.7.0 to 3.7.1
Bump rspec-rails from 3.7.0 to 3.7.1

Bumps [rspec-rails](https://github.com/rspec/rspec-rails) from 3.7.0 to 3.7.1.
- [Changelog](https://github.com/rspec/rspec-rails/blob/master/Changelog.md)
- [Commits](https://github.com/rspec/rspec-rails/compare/v3.7.0...v3.7.1)
biow0lf/prometheus2.0,biow0lf/prometheus2.0,biow0lf/prometheus2.0,biow0lf/prometheus2.0