The ornamental design for a utilitycart handle, as shown and described.
FIG. 1 is a top perspective view of a utility cart handle showing our new design;
FIG. 2 is a top back perspective view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a front view thereof;
FIG. 5 is a side view thereof;
FIG. 6 is a back view thereof; and,
FIG. 7 is a bottom view thereof.
The broken lines showing lettering on the handle show portions of the utility cart handle which form no part of the claimed design. Additional broken lines show environment and form no part of the claimed design.