We claim the ornamental design for a beverage dispenser, as shown and described.
FIG. 1 is an upper perspective view of a beverage dispenser showing one embodiment of our new design;
FIG. 2 is an underside perspective view thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is a right side elevational view thereof;
FIG. 5 is a front view thereof;
FIG. 6 is a back view thereof;
FIG. 7 is a top plan view thereof;
FIG. 8 is a bottom plan view thereof; and,
FIG. 9 is a perspective view showing environment.
The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design. The area shown broken away is represent indeterminate length.