Update sample-factory version to 2.1.3 to no pytorch 2.6+ error occurs

[B-ramB]

Sample-factory has an updated version which allows it to work with Pytroch2.6+

Sample-factory utilizes a pytorch function: checkpoint_dict = torch.load(latest_checkpoint, map_location=device)

Pytorch 2.6+ requires an additional weights_only=False variable for the function.

This function is called correctly in sample-factory 2.1.3