actions/checkout v6 was already adopted in headlamp-agent-skills.
This brings the org-level reusable workflows (plugin-ci, plugin-release,
ci-health-check) up to the same version. Affects all plugin repos that
call these shared workflows.
Co-Authored-By: Paperclip <noreply@paperclip.ing>
Adds a security audit step (npm audit --omit=dev) to catch known
vulnerabilities in production dependencies. Runs after tests so build
failures are reported before audit findings. Uses --omit=dev to focus
on production-facing risk.
This covers all 6 plugin repos that use the shared workflow.