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

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tests/test_sampler.py

@@ -15,7 +15,9 @@
 # limitations under the License.
 from datasets import Dataset
 
-from lerobot.common.datasets.push_dataset_to_hub.utils import calculate_episode_data_index
+from lerobot.common.datasets.push_dataset_to_hub.utils import (
+    calculate_episode_data_index,
+)
 from lerobot.common.datasets.sampler import EpisodeAwareSampler
 from lerobot.common.datasets.utils import (
     hf_transform_to_torch,