Log Message:
sysutils/ruby-childprocess: update to 3.0.0

Update ruby-childprocessto 3.0.0.

### Version 3.0.0 / 2019-09-20

* [#156](https://github.com/enkessler/childprocess/pull/156)Remove unused \ 
`rubyforge_project` from gemspec
* [#160](https://github.com/enkessler/childprocess/pull/160): Remove extension \ 
to conditionally install `ffi` gem on Windows platforms
* [#160](https://github.com/enkessler/childprocess/pull/160): Remove runtime \ 
dependency on `rake` gem

### Version 2.0.0 / 2019-07-11

* [#148](https://github.com/enkessler/childprocess/pull/148): Drop support for \ 
Ruby 2.0, 2.1, and 2.2
* [#149](https://github.com/enkessler/childprocess/pull/149): Fix Unix fork \ 
reopen to be compatible with Ruby 2.6
* \ 
[#152](https://github.com/enkessler/childprocess/pull/152)/[#154](https://github.com/enkessler/childprocess/pull/154): \ 
Fix hangs and permission errors introduced in Ruby 2.6 for leader processes of \ 
process groups

### Version 1.0.1 / 2019-02-03

* [#143](https://github.com/enkessler/childprocess/pull/144): Fix installs by \ 
adding `rake` gem as runtime dependency
* [#147](https://github.com/enkessler/childprocess/pull/147): Relax `rake` gem \ 
constraint from `< 12` to `< 13`

### Version 1.0.0 / 2019-01-28

* [#134](https://github.com/enkessler/childprocess/pull/134): Add support for \ 
non-ASCII characters on Windows
* [#132](https://github.com/enkessler/childprocess/pull/132): Install `ffi` gem \ 
requirement on Windows only
* [#128](https://github.com/enkessler/childprocess/issues/128): Convert \ 
environment variable values to strings when `posix_spawn` enabled
* [#141](https://github.com/enkessler/childprocess/pull/141): Support JRuby on \ 
Java >= 9