revert circleci update

.circleci/config.yml

@@ -155,7 +155,7 @@ jobs:
             pip install "boto3>=1.28.57"
             pip install "aioboto3>=12.3.0"
             pip install langchain
-            pip install "langfuse>=2.6.3"
+            pip install "langfuse>=2.0.0"
             pip install numpydoc
             pip install prisma            
             pip install fastapi