Add libffi-devel to system packages to be pre-installed

[ogajduse]

This patch adds libffi-devel to system packages to be installed before bundle install is run.

Reading from https://jenkins-foreman.apps.ocp.cloud.ci.centos.org/blue/organizations/jenkins/foreman-pipeline-candlepin-rpm-nightly/detail/foreman-pipeline-candlepin-rpm-nightly/778/pipeline/77:

[2026-03-02T02:05:37.361Z]         Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
[2026-03-02T02:05:37.361Z] 
[2026-03-02T02:05:37.361Z]             current directory: /usr/local/share/gems/gems/fiddle-1.1.8/ext/fiddle
[2026-03-02T02:05:37.361Z]         checking for --enable-debug-build option... no
[2026-03-02T02:05:37.361Z]         checking for pkg-config for libffi... not found
[2026-03-02T02:05:37.361Z]         checking for ffi.h... no
[2026-03-02T02:05:37.361Z]         checking for ffi/ffi.h... no
[2026-03-02T02:05:37.361Z]         *** extconf.rb failed ***
[2026-03-02T02:05:37.361Z]         Could not create Makefile due to some reason, probably lack of necessary
[2026-03-02T02:05:37.361Z]         libraries and/or headers.  Check the mkmf.log file for more details.  You may
[2026-03-02T02:05:37.361Z]         need configuration options.

[2026-03-02T02:05:37.362Z]         In Gemfile:
[2026-03-02T02:05:37.362Z]           voxpupuli-test was resolved to 9.2.1, which depends on
[2026-03-02T02:05:37.362Z]             rspec-puppet-utils was resolved to 3.4.0, which depends on
[2026-03-02T02:05:37.362Z]               puppetlabs_spec_helper was resolved to 8.0.0, which depends on
[2026-03-02T02:05:37.362Z]                 puppet-syntax was resolved to 4.1.1, which depends on
[2026-03-02T02:05:37.362Z]                   puppet was resolved to 8.10.0, which depends on
[2026-03-02T02:05:37.362Z]                     locale was resolved to 2.1.5, which depends on
[2026-03-02T02:05:37.362Z]                       fiddle

This is caused by ruby-gettext/locale@f2134c3 that makes fiddle a dependency. And since fiddle is alibffi wrapper for Ruby, we need libffi-devel installed on the system.

[evgeni]

this is the way to fiddle

[Odilhao]

I'm also creating ruby-gettext/locale#24 since it also affects our puppet-modules pipelines.

[qcjames53]

This fiddle libffi-devel dependency impacts provisioning of development environments. I've put out this PR to fix it.