Adds libyaml for supporting bundler and ruby
Adds libyaml for supporting bundler and ruby

This allows bundler / ruby scripts to use libyaml for parsing YAML file. It also unblocks the remaining work for supporting ruby using the GCP buildpacks.

PiperOrigin-RevId: 425492552
Change-Id: I341c7c94e3633a5b669684171432bb05621f1106

GoogleCloudPlatform/buildpacks,GoogleCloudPlatform/buildpacks,GoogleCloudPlatform/buildpacks,GoogleCloudPlatform/buildpacks