The ornamental design for a pallet, as shown and described.
1. Pallet
1.1 : Perspective
1.2 : Perspective
1.3 : Top
1.4 : Bottom
1.5 : Front
1.6 : Back
1.7 : Left
1.8 : Right
Reproduction 1.1 is a bottom perspective view of a pallet showing a new design; reproduction 1.2 is a top perspective view of the pallet illustrated in reproduction 1.1; reproduction 1.3 is a top view thereof; reproduction 1.4 is a bottom view thereof; reproduction 1.5 is a front view thereof; reproduction 1.6 is a rear view thereof; reproduction 1.7 is a left side view thereof; reproduction 1.8 is a right side view thereof.