I claim the ornamental design for a faucet, as shown and described.
FIG. 1 is a top, front, right perspective view of another embodiment of the claimed design;
FIG. 2 is a right elevation view thereof;
FIG. 3 is a left elevation view thereof;
FIG. 4 is a front elevation thereof;
FIG. 5 is a rear elevation thereof;
FIG. 6 is a top plan thereof; and,
FIG. 7 is a bottom plan thereof.
The ornamental design which is claimed is shown in solid lines in the drawings. The broken lines in the drawings form no part of the claimed design. Broken lines formed by equal length dashes show unclaimed subject matter.