The ornamental design for a shoe, as shown and described.
FIG. 1 is a left side view of a shoe showing my new design;
FIG. 2 is a right side view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a front view thereof;
FIG. 5 is a back view thereof; and,
FIG. 6 is a bottom view thereof.
The broken lines represented by even dashed lines shown on the shoe represent thread stitching. The broken lines represented by dot and dash lines shown on the bottom of the shoe represent an unclaimed portion of the design.