[CI] Add explicit trigger for branches/PRs
[CI] Add explicit trigger for branches/PRs

Azure pipelines has stopped triggering, the issue is being fixed but
this works around it for now.

lowRISC/ibex,lowRISC/ibex,lowRISC/ibex,AmbiML/ibex,AmbiML/ibex,AmbiML/ibex,AmbiML/ibex,lowRISC/ibex