Revert "fix(deps): breaking change from transformers 5.4.0" (#3249)

* Revert "fix(deps): breaking change from transformers 5.4.0 (#3231)"

This reverts commit 07502868e5.

* chore(dependecies): pin transformers to 5.3.0 temporarily

src/lerobot/policies/groot/groot_n1.py

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from dataclasses import field
+from dataclasses import dataclass, field
 from pathlib import Path
 from typing import TYPE_CHECKING
 
@@ -173,6 +173,7 @@ N_COLOR_CHANNELS = 3
 
 
 # config
+@dataclass
 class GR00TN15Config(PretrainedConfig):
     model_type = "gr00t_n1_5"
     backbone_cfg: dict = field(init=False, metadata={"help": "Backbone configuration."})