The ornamental design for a cargorack, as shown and described.
FIG. 1 is a perspective back side view of a cargo rack of the present invention;
FIG. 2 is a right side view of the cargo rack;
FIG. 3 is a left side view of the cargo rack;
FIG. 4 is a back side view of the cargo rack;
FIG. 5 is a front side view of the cargo rack;
FIG. 6 is a top side view of the cargo rack; and,
FIG. 7 is a perspective back side exploded view of the cargo rack.
The broken lines shown in the drawings depicting the bed of the truck illustrate the unclaimed environment in which the cargo rack is used. The remaining broken lines illustrate portions of the article that are not claimed. None of the broken lines form part of the claimed design.