fix(optimization_tutorial): replace deprecated ToTensor with v2.Compose transforms

Author: Kadermiyanyedi

beginner_source/basics/optimization_tutorial.py

@@ -28,20 +28,20 @@
 from torch import nn
 from torch.utils.data import DataLoader
 from torchvision import datasets
-from torchvision.transforms import ToTensor
+from torchvision.transforms import v2
 
 training_data = datasets.FashionMNIST(
     root="data",
     train=True,
     download=True,
-    transform=ToTensor()
+    transform=v2.Compose([v2.ToImage(), v2.ToDtype(torch.float32, scale=True)])
 )
 
 test_data = datasets.FashionMNIST(
     root="data",
     train=False,
     download=True,
-    transform=ToTensor()
+    transform=v2.Compose([v2.ToImage(), v2.ToDtype(torch.float32, scale=True)])
 )
 
 train_dataloader = DataLoader(training_data, batch_size=64)