I claim the ornamental design for a solar swimming pool skimmer, as shown and described.
FIG. 1 is an isometric view of the solar swimming pool skimmer;
FIG. 2 is a front view of the solar swimming pool skimmer;
FIG. 3 is a rear view of the solar swimming pool skimmer;
FIG. 4 is a left side view of the solar swimming pool skimmer;
FIG. 5 is a right side view of the solar swimming pool skimmer;
FIG. 6 is a top side view of the solar swimming pool skimmer; and,
FIG. 7 is a bottom side view of the solar swimming pool skimmer.
The broken lines displayed in all views are included to show unclaimed portions of the solar swimming pool skimmer which form no part of the claimed design.