[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

src/lightning/pytorch/callbacks/memory_format.py

@@ -18,7 +18,8 @@
 changes the model memory format
 """
 
-from typing import Any, MutableSequence, Optional
+from collections.abc import MutableSequence
+from typing import Any, Optional
 
 import torch
 

tests/tests_pytorch/callbacks/test_memory_format.py

@@ -15,6 +15,7 @@
 from unittest.mock import MagicMock
 
 import torch
+
 from lightning.pytorch import LightningModule, Trainer
 from lightning.pytorch.callbacks import MemoryFormat