The ornamental design for a faucet handle, as shown and described.
FIG. 1 is a perspective view of a faucet handle showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a first side view thereof;
FIG. 4 is a front view thereof; the opposite side being a mirror image of the side shown; and,
FIG. 5 is a second side view thereof.
The broken line shown in the drawings is included for the purpose of illustrating a portion of the faucet handle that forms no part of the claimed design.