The ornamental design for a workstation, as shown and described.
FIG. 1 is a top-perspective view of a workstation;
FIG. 2 is a top view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a left-side view thereof;
FIG. 5 is a right-side view thereof;
FIG. 6 is a bottom view thereof; and,
FIG. 7 is a back view thereof.
FIG. 8 is a top-perspective view of the workstation with the work surface of the workstation shown in a different position;
FIG. 9 is a top view thereof;
FIG. 10 is a front view thereof;
FIG. 11 is a left-side view thereof;
FIG. 12 is a right-side view thereof;
FIG. 13 is a bottom view thereof; and,
FIG. 14 is a back view thereof.
The dash-dash broken lines shown in the drawings illustrate portions of the workstation that form no part of the claimed design. The dot-dash lines define the bounds of the claimed design and form no part thereof.