The ornamental design for a babyseat, as shown and described.
FIG. 1 is a front, top, left side perspective view of the baby seat;
FIG. 2 is a front elevational view of the baby seat;
FIG. 3 is a back elevational view of the baby seat;
FIG. 4 is a right side elevational view of the baby seat;
FIG. 5 is a left side elevational view of the baby seat;
FIG. 6 is a top plan view of the baby seat; and,
FIG. 7 is a bottom plan view of the baby seat.
The dot-dash-dot lines represent the boundary of the claimed design and the dashed lines show the base of the seat and 5 oblong shapes which are portions of the seat forming no part of the claimed design.