Some GH actions are not needed on specific folders

[e-minguez]

I think it would be nice to prevent some github actions to be executed if they are not needed. For example this PR #333 triggered unit tests https://github.com/SUSE/elemental/actions/runs/20997850129/job/60359325600?pr=333 and integration tests https://github.com/SUSE/elemental/actions/runs/20997850127/job/60359325536?pr=333 but AFAIK those are not needed (unless they use the examples, which honestly I didn't checked :D)