The ornamental design for a light, as shown and described.
FIG. 1 is a bottom view of a light that has the design.
FIG. 2 is a front elevation of the light.
FIG. 3 is a left side elevation of the light. The opposite side view is identical to this view.
FIG. 4 is a rear elevation of the light.
FIG. 5 is a top plan view of the light.
FIG. 6 is a side and bottom perspective view of the light; and,
FIG. 7 is a top and side perspective view of the light.
The broken line showing of elements on the top of the light is for the purpose of illustrating the top of the light, and forms no part of the claimed design.