I claim 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 left side view thereof; and,
FIG. 3 is a rear perspective view thereof.
The dot-dot-dash broken lines adjacent to the claimed area represent boundaries of the claimed design and form no part thereof. The broken lines depicting the remainder of the shoe show features that form no part of the claimed design.