[models.pasa] Set grayscale/resize model transforms

src/ptbench/models/pasa.py

@@ -73,7 +73,8 @@ class Pasa(pl.LightningModule):
         self.name = "pasa"
 
         self.model_transforms = [
-            torchvision.transforms.Resize(512),
+            torchvision.transforms.Grayscale(),
+            torchvision.transforms.Resize(512, antialias=True),
         ]
 
         self._train_loss = train_loss