The ornamental design for a collapsibletent, as shown and described.
FIG. 1 is a perspective view of the “collapsible tent” in the expanded state, showing my new design;
FIG. 2 is front elevation view thereof;
FIG. 3 is a back elevation view thereof;
FIG. 4 is a right side elevation view thereof;
FIG. 5 is a left side elevation view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken line showings in FIGS. 1-7 are for illustrative purposes only, depicting the environment of the new design, forming no part thereof as claimed.