We claim the ornamental design for a quilting foot, as shown and described.
FIG. 1 is a left perspective view of a quilting foot;
FIG. 2 is a right perspective view of the quilting foot;
FIG. 3 is a top plan view of the quilting foot;
FIG. 4 is a left side elevation view of the quilting foot;
FIG. 5 is a front elevation view of the quilting foot;
FIG. 6 is a bottom plan view of the quilting foot;
FIG. 7 is a right side elevation view of the quilting foot; and,
FIG. 8 is a rear elevation view of the quilting foot.
The portions of the quilting foot shown in broken lines in the figures depict environmental subject matter only and form no part of the claimed design.