The ornamental design for a transporter, as shown and described.
FIG. 1 is a perspective view of the transporter as viewed from the left, front side of the transporter, with an environment of use of the transporter shown in broken lines for illustrative purposes and not forming part of the claimed design;
FIG. 2 is a left side elevation view of the transporter the transporter, , with an environment of use of the transporter shown in broken lines for illustrative purposes and not forming part of the claimed design;
FIG. 3 is a top view of the transporter, with an environment of use of the transporter shown in broken lines for illustrative purposes and not forming part of the claimed design;
FIG. 4 is a front elevation view of the transporter, with an environment of use of the transporter shown in broken lines for illustrative purposes and not forming part of the claimed design; and,
FIG. 5 is a rear elevation view of the transporter, with an environment of use of the transporter shown in broken lines for illustrative purposes and not forming part of the claimed design.