Workaround for BMK-1158: avoid SILENT failures of find_specfile
This is a horrible workaround for BMK-1158, to avoid silenet failures of find_specfile in the CI yaml.
It is horrible, because I believe the proper fix should be, eventually (not now), to rework the yaml and avoid multiline scripts. Specifically I would go back to the design in my older .gitlab-ci.sh, see BMK-1159.
@giordano, this is not really urgent. And it is horrible. But I open the MR for the record. You may consider accepting it (will not harm) or closing it and we do BMK-1159 instead (which would probably undo a large part of this anyway).
It is not urgent because it probably will have zero impact when I remove the underlying issues (a missing madgraph2023 spec in my qa branch).
Anyway, up to you! Thanks Andrea