Invalid Pretrained Checkpoints

It seems as though the pretrained checkpoints don't work with the current model. Running the given commands with the correct paths yields error

```
RuntimeError: Error(s) in loading state_dict for ResnetTensorObjectNavActorCritic:
size mismatch for goal_visual_encoder.resnet_compressor.0.weight: copying a param with shape torch.Size([128, 512, 1, 1]) from checkpoint, th
e shape in current model is torch.Size([128, 2048, 1, 1]).
size mismatch for actor.linear.weight: copying a param with shape torch.Size([4, 512]) from checkpoint, the shape in current model is torch.S
ize([6, 512]).
size mismatch for actor.linear.bias: copying a param with shape torch.Size([4]) from checkpoint, the shape in current model is torch.Size([6]
).
```

perhaps the checkpoints need to be updated? Please advise.