Fix fc impl

FC Operator has been changed in aidge_core!129 (merged) to remove the necessity to specify an outChannels attribute. It can now be accessed via a member function.

added Fix 🔥🔥 label

assigned to @pineapple

changed target branch from main to dev

enabled an automatic merge when the pipeline for cc60a931 succeeds

mentioned in commit a9f688e3

merged