Relax childprocess dependency version

[delphaber]

childprocess turned 1 on January, so I tried to relax childprocess dependency version from ~> 0.6 to >= 0.6.3.

Let's see if CI passes :)

[delphaber]

Dang! It breaks on Windows! Maybe because of enkessler/childprocess#132 ? 🤔

[sds]

Thanks for the PR, @delphaber.

Yes, childprocess requires the ffi gem to be installed on Windows machines. However, it doesn't require this by default since most use cases don't need it and it slows down installs. See enkessler/childprocess#150 for context.

I think the simplest workaround is to add the following to this project's Gemfile so we get the tests to pass on Windows:

gem 'ffi' if Gem.win_platform?

What do you think?

[delphaber]

Makes totally sense! thanks :) I'm updating the PR

[delphaber]

Done! Let's wait for the CIs :)

[sds]

Thanks for the PR! Fixed the broken test and merged in #653.