We claim the ornamental design for a faucet, as shown and described.
FIG. 1 is a perspective view of a faucet shown in an extended position;
FIG. 2 is a side view thereof;
FIG. 3 is another side view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a front view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof; and,
FIG. 8 is another perspective view thereof shown in a retracted position.
The ornamental design that which is claimed is shown in solid lines in the drawings. The broken lines are included for the purpose of illustrating portions of the article and form no part of the claimed design.