fix parameter errors when invoking bedrock llms

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "refchecker"
-version = "0.2.13"
+version = "0.2.14"
 description = "RefChecker provides automatic checking pipeline for detecting fine-grained hallucinations generated by Large Language Models."
 authors = [
     "Xiangkun Hu <[email protected]>",
@@ -15,7 +15,7 @@ license = "Apache-2.0"
 [tool.poetry.dependencies]
 python = "^3.10"
 spacy = "^3.7"
-boto3 = "^1.34"
+boto3 = "^1.35"
 torch = "^2"
 transformers = "^4.41"
 rank-bm25 = "^0.2"
@@ -26,7 +26,7 @@ nltk = "^3.8"
 pytorch_lightning = "^2.3"  # for alignscore
 scikit-learn = "^1.5"
 accelerate = "^0.31"
-litellm = "^1.48"
+litellm = "^1.49"
 diskcache = "^5"
 
 # optional dependencies required by specific modules

refchecker/utils.py

@@ -150,6 +150,7 @@ def get_model_batch_response(
                 n=n_choices,
                 max_tokens=max_new_tokens,
                 api_base=api_base,
+                max_workers=None,
                 **kwargs
             )
             try: