We claim the ornamental design for a garden tool, as shown and described.
FIG. 1 is a top perspective view of the claimed design;
FIG. 2 is a bottom perspective view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a bottom view of FIG. 1;
FIG. 5 is a left side view of FIG. 1;
FIG. 6 is a right side view of FIG. 1;
FIG. 7 is a rear view of FIG. 1;
FIG. 8 is a front view of FIG. 1;
FIG. 9 is a top perspective view of FIG. 1 with handles in an extended position; and,
FIG. 10 is a bottom view of FIG. 4 with the handles in an extended position.
The ornamental design which is claimed is shown in solid lines in the drawings. The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design.