Drilling into outdoor stucco to hang bike
I live north of Pittsburgh, Pa. and that stucco exterior finish was used on older commercial brick, stone or masonry buildings as a cheap insulation. It consisted of 2" white styrofoam board, covered with what we call "chicken wire" fencing, then that was covered with an exterior plaster type coating. I believe that the whole process was often called DRIVIT. You could not hang anything on it. I would follow Jim Stewart's advice as a solution