Set lighteval version 0.6.2

lighteval>=0.5.0 now sets the version at 0.7.0. However, on this version the file lighteval.models.model_config.py doesn't exist anymore, which breaks the app. But, if the version is set to 0.5.0, then there is a "cannot import name 'T_co' from 'torch.utils.data.distributed'" error. Setting the version to 0.6.2 makes the backend work correctly.

requirements.txt

@@ -8,7 +8,7 @@ accelerate>=0.26.0
 sentencepiece
 
 # Evaluation suites
-lighteval>=0.5.0
+lighteval==0.6.2
 lm_eval==0.4.3
 
 # Log Visualizer