Changed default cuda dtype to torch.float32.

Author: Miguel Alonso Jr

ml-agents/mlagents/torch_utils/torch.py

@@ -53,7 +53,7 @@ def set_torch_config(torch_settings: TorchSettings) -> None:
 
     if _device.type == "cuda":
         torch.set_default_device(_device.type)
-        torch.set_default_dtype(torch.cuda.FloatTensor)
+        torch.set_default_dtype(torch.float32)
     else:
         torch.set_default_dtype(torch.float32)
     logger.debug(f"default Torch device: {_device}")