Reduce default LM retries to 3

Author: okhat

dspy/clients/lm.py

@@ -35,7 +35,7 @@ def __init__(
         cache: bool = True,
         cache_in_memory: bool = True,
         callbacks: Optional[List[BaseCallback]] = None,
-        num_retries: int = 8,
+        num_retries: int = 3,
         provider=None,
         finetuning_model: Optional[str] = None,
         launch_kwargs: Optional[dict[str, Any]] = None,