The ornamental design for a luminary, as shown and described.
FIG. 1 is a top, front, and side perspective view of a luminary showing our new design;
FIG. 2 is a left side elevational view thereof;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a rear elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken-line disclosure in the views is understood to represent portions of the article in which the claimed design is embodied, but which form no part of the claimed design. Broken lines which define the edge of a claimed surface are understood to represent an unclaimed boundary between claimed and unclaimed surfaces: claimed surfaces being provided with surface shading and unclaimed surfaces showing no surface shading.