The ornamental design for a shoe, as shown and described.
FIG. 1 is a front perspective view of a shoe showing my new design;
FIG. 2 is a side view thereof; and,
FIG. 3 is a rear perspective view thereof.
The broken line showing of the diamond-shaped regions within the shaded area represent features that form no part of the claimed design. The broken lines depicting the remainder of the shoe show features that form no part of the claimed design.