Not directly, but you can split the image into separate .png files and use variable updates to cycle through the images.
The result looks identical to an animated GIF.
Directions and Example below:
Step 1: Split using http://ezgif.com/split
Step 2: Create an integer variable in WinScriptLive with min and max of above number of images split
Step 3: Add an "Image" item and use "Actions" to change the image for each variable value
Step 4: Create a Sequence that increments the variable based on the rate you'd like your GIF to "cycle"