We claim the ornamental designs for the workstation, as shown and described.
FIG. 1 shows a perspective view of a first embodiment of a workstation;
FIG. 2 shows a top view of the workstation of FIG. 1;
FIG. 3 shows a bottom view of the workstation of FIG. 1;
FIG. 4 shows a front view of the workstation of FIG. 1;
FIG. 5 shows a rear view of the workstation of FIG. 1;
FIG. 6 shows a right side view of the workstation of FIG. 1; and,
FIG. 7 shows a left side view of the workstation of FIG. 1.
Any broken lines in FIGS. 1-7 are for environmental purposes only and form no part of the claimed designs. The ornamental designs which are claimed are shown in solid lines in the drawings.