We claim the ornamental design for a broach, as shown and described.
FIG. 1 is a top-front perspective view of a design of the broach;
FIG. 2 is a front elevation view of the broach of FIG. 1;
FIG. 3 is a rear elevation view of the broach of FIG. 1;
FIG. 4 is a top plan view of the broach of FIG. 1;
FIG. 5 is a bottom plan view of the broach of FIG. 1;
FIG. 6 is a first side elevation view of the broach of FIG. 1; and,
FIG. 7 is a second side elevation view the broach of FIG. 1.
The broken lines represent unclaimed portions of the article and form no part of the claimed design. The dash-dot-dot-dash broken line in FIG. 1 indicates a boundary of claimed subject matter.