Rely on VoxPupuli shared workflows

[smortex]

This boillerplate is shared by all modules, and when regression happen,
all modules need to be updated. Using shared workflows will allow us to
benefit from VoxPupuli fixes without having to copy them manually.

[smortex]

For the record, we are currently needing this:
voxpupuli/gha-puppet#21

Example failure:
https://github.com/ccin2p3/puppet-patterndb/actions/runs/3879751201/jobs/6618098052

[smortex]

@faxm0dem I used this to simplify and fix CI in the patterndb module (I run modulesync for that module from this branch to generate ccin2p3/puppet-patterndb#32 ).

I will open other PR with this code for puppet-syslog_ng and puppet-riemann to ensure that it works as expected.

[smortex]

The relevant branches:

• Update using ModuleSync puppet-riemann#12 is unknown ❔ (CI code has still not been merged in the main branch. I run the style and unit tests on my machine successfully, but can't test the acceptance one for now);
• Update using ModuleSync puppet-syslog_ng#35 is green ✔️