fix linter

Signed-off-by: Arthur Dujardin <arthurdujardin.dev@gmail.com>

Author: arthurdjn

monai/data/utils.py

@@ -647,7 +647,7 @@ def decollate_batch(batch, detach: bool = True, pad=True, fill_value=None):
     if isinstance(batch, np.ndarray):
         if batch.ndim == 0:
             return batch.item()
-        out_list = list(batch)
+        out_list = list(batch)  # type: ignore[assignment]
         if out_list[0].ndim == 0 and detach:
             return [t.item() for t in out_list]
         return out_list