We claim the ornamental design for a vehicle step for sliding into brackets, as shown and described.
FIG. 1. is a perspective view of my vehicle step for sliding into brackets;
FIG. 2. is a rear view thereof;
FIG. 3. is a front view thereof;
FIG. 4. is a left elevation view thereof;
FIG. 5. is a right side elevation view thereof;
FIG. 6. is a top view thereof;
FIG. 7. is a bottom view thereof; and,
FIG. 8 is a perspective view thereof showing placement on a vehicle having brackets therein, the vehicle and brackets being shown in phantom (phantom not part of the invention).