Update net-ssh dependency to version 2.6.8
Update net-scp dependency to version 1.1.2
Update puma dependency to version 2.3.2
Update safe_yaml dependency to version 0.9.4
Update bcrypt-ruby dependency to version 3.1.1
Update bluepill dependency to version 0.0.65
Update rvm-capistrano dependency to version 1.4.1
Update cucumber dependency to version 1.3.4