The ornamental design for a light, as shown and described.
FIG. 1 is a perspective view of a light showing our new design.
FIG. 2 is a bottom view thereof.
FIG. 3 is a left side view thereof.
FIG. 4 is a top view thereof.
FIG. 5 is a right side view thereof.
FIG. 6 is a front view thereof; and,
FIG. 7 is a rear view thereof.
The broken lines in the views show environmental features which are for illustrative purposes only and form no part of the claimed design.