The ornamental design for a faucetassembly, as shown and described.
FIG. 1 is a perspective view of a faucet assembly showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a top plan view thereof; and,
FIG. 6 is a bottom plan view thereof.
The broken line showing the spout opening is included for the purpose of illustrating a portion of the faucet assembly that forms no part of the claimed design.