The ornamental design for a shoe, as shown and described.
FIG. 1 is a side view of a shoe showing my new design;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is rear view thereof;
FIG. 4 is an opposite side rear perspective view thereof; and,
FIG. 5 is an opposite side view thereof.
The contrast in shading between the two regions represents a contrast in appearance only and does not represent any particular color, material, texture or finish. The broken lines depicting the remainder of the shoe show features that form no part of the claimed design.