cubicweb-processing #5760518 Update code to CW 3.19 API [validation pending]

prioritynormal
typetask
done in0.7.0
load1.000
load left0.000
closed by#59ebfe53ba77 [tests] update to 3.19 API
patch[hooks] update to 3.19, remove cnxset manipulation [applied][tests] update to 3.19 API [applied]