devel/ruby-bulid: Add libffi and libyaml as dependency

libffi and libyaml are no longer bundled with Ruby since 3.2.0 [1] so
these packages must be installed to build Ruby with ruby-build.

[1] https://www.ruby-lang.org/en/news/2022/12/25/ruby-3-2-0-released/

(cherry picked from commit 6e95508d0e5c5c34b22e7e1ca7317dd3080ef385)