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;
FIG. 3 is an opposite side view thereof; and,
FIG. 4 is an opposite side front perspective view thereof.
The broken lines immediately adjacent to the shaded areas define the bounds of the claimed design and form no part thereof. The broken lines depicting the remainder of the shoe form no part of the claimed design.