I claim the ornamental design for a lighting shroud, as shown and described.
FIG. 1 is a front perspective view of a lighting shroud, showing my new design;
FIG. 2 is a right-side elevational view thereof, the left-side elevational view being a mirror image thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is an alternate front perspective view thereof; and,
FIG. 8 is a rear perspective view thereof.
The broken lines showing a bracket in FIG. 6 and a light figures in FIG. 7 depict environmental matter and form no part of the claimed design. The remaining broken lines represent stitching, and are part of the claimed design.