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

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

lerobot/scripts/server/buffer.py

@@ -946,6 +946,7 @@ if __name__ == "__main__":
         gripper_penalty values in complementary_info.
         """
         import time
+
         from lerobot.common.datasets.lerobot_dataset import LeRobotDataset
 
         print("Loading dataset with complementary info...")