The ornamental design for a bracket, as shown and described.
FIG. 1 is a front top perspective view of a bracket showing our new design;
FIG. 2 is a rear bottom perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a right side view thereof;
FIG. 7 is a top view thereof;
FIG. 8 is a bottom view thereof; and,
FIG. 9 is an enlarged view of the encircled portion 9 indicated in FIG. 7.
The broken lines depict portions of the bracket that form no part of the claimed design. The dot-dash broken lines depict the boundaries of the enlarged detail view and form no part of the claimed design.