[ci] Run more frontend fixture jobs in parallel
Context
While looking at predictive backend pipelines, I noticed that for frontend pipelines, a significant time was spent waiting for frontend fixtures to finish in order to start Jest (or jest predictive) jobs (Pipeline (trace)):
Goal
Go from 7 jobs
to 10 jobs
for rspec-all frontend_fixture
, and check whether the overall time would improve for those pipelines.
Edited by David Dieulivol