fix: pipeline.utils: iterated container can't change in loop
fix: pipeline.utils: iterated container can't change in loop

FCP-INDI/nipype,FCP-INDI/nipype,sgiavasis/nipype,sgiavasis/nipype,carolFrohlich/nipype,carolFrohlich/nipype,sgiavasis/nipype,mick-d/nipype,iglpdc/nipype,sgiavasis/nipype,mick-d/nipype,pearsonlab/nipype,iglpdc/nipype,FCP-INDI/nipype,mick-d/nipype,iglpdc/nipype,mick-d/nipype,pearsonlab/nipype,dgellis90/nipype,dgellis90/nipype,pearsonlab/nipype,carolFrohlich/nipype,pearsonlab/nipype,iglpdc/nipype,carolFrohlich/nipype,dgellis90/nipype,dgellis90/nipype,FCP-INDI/nipype