fix: fix before_script for chef-push-cookbook task
What
Fix before_script for chef-push-cookbook
task.
Why
Without setting it explicitly it runs the global before_script
defined in chef-kitchen.yml
instead (which we should move into a job template later), making it run bundle install
with the cookbook's Gemfile for no reason, taking a lot of time and possibly failing when those dependencies are too old (many cookbooks are still on Ruby 2.7).