We claim the ornamental design for a faucet, as shown and described.
FIG. 1 is a front, top, right side perspective view of a faucet showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear side view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The broken lines immediately adjacent to the shaded areas depict the boundaries of the claim and form no part thereof. All other broken lines and the spaces contained within them depict portions of the faucet that form no part of the claimed design.