The ornamental design for a productpackaging, as shown and described.
FIG. 1 is a top, front, left perspective view of a product packaging showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The broken lines are shown for the purpose of illustrating parts of the product packaging that form no part of the claimed design. The surfaces demarcated by solid lines form no part of the claimed design.