The ornamental design for a shower caddysoappump, as shown and described.
FIG. 1 is a left perspective view of a shower caddy soap pump showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
In the illustrations of the article embodying the inventive design, the portions represented in dotted lines do not form a part of the design that embodies the inventive design.