The ornamental design for a solarlight, as shown and described.
FIG. 1 is a top, front, and right side perspective view of a solar light showing my new design;
FIG. 2 is a front elevational view thereof, the rear being identical in appearance;
FIG. 3 is a right side elevational view thereof, the left side being identical in appearance;
FIG. 4 is a bottom plan view thereof, the broken-line disclosure being a portion of the article in which the claimed design is embodied, but which forms no part of the claimed design; and,