We claim the ornamental design for a sink console, as shown and described.
FIG. 1 is a front, top, left side perspective view of a sink console showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear side view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The broken lines immediately adjacent to the shaded areas represent the bounds of the claim, while other broken lines depict portions of the sink console. The broken lines form no part of the claimed design.