The ornamental design for the faucet, as shown and described.
FIG. 1 is a front perspective view of the faucet according to my design, the brackets indicating that the precise spacing between the illustrated elements is not claimed;
FIG. 2 is a rear perspective view of the faucet;
FIG. 3 is a front elevational view of the faucet;
FIG. 4 is a top plan view of the faucet;
FIG. 5 is a bottom plan view of the faucet;
FIG. 6 is a left elevational view of the faucet, the right side view being a mirror image thereof; and,
FIG. 7 is a rear elevational view of the faucet.
The fluid flow ports are shown in broken lines for illustrative purposes only and form no part of the claimed design.