Lighting Fixture

FIG. 1 is a top perspective view of a lighting fixture depicting a new design; FIG. 2 is a front elevation view thereof; FIG. 3 is a back elevation view thereof; FIG. 4 is a left elevation view thereof; FIG. 5 is a right elevation view thereof; FIG. 6 is a top plan view thereof; and, FIG. 7 is a bottom plan view thereof. The broken line disclosures in the views represent portions of the lighting fixture that form no part of the claimed design.