Fix typing-extensions dependency: add >=4.14.1 requirement

- Add typing-extensions>=4.14.1 to pyproject.toml, requirements.txt, and .circleci/requirements.txt
- Required by pydantic-core which needs Sentinel from typing_extensions
- Also update fastapi-sso to 0.19.0 in .circleci/requirements.txt to match previous fix
- Fixes ImportError: cannot import name 'Sentinel' from 'typing_extensions'

.circleci/requirements.txt

@@ -9,9 +9,10 @@ redisvl==0.4.1
 anthropic
 orjson==3.10.12 # fast /embedding responses
 pydantic==2.10.2
+typing-extensions>=4.14.1  # required by pydantic-core
 google-cloud-aiplatform==1.43.0
 google-cloud-iam==2.19.1
-fastapi-sso==0.16.0 
+fastapi-sso==0.19.0  # updated to fix GHSA-hp6r-r9vc-q8wx
 uvloop==0.21.0
 mcp==1.10.1    # for MCP server  
 semantic_router==0.1.10 # for auto-routing with litellm

pyproject.toml

@@ -32,6 +32,7 @@ jinja2 = "^3.1.2"
 aiohttp = ">=3.10"
 pydantic = "^2.5.0"
 jsonschema = "^4.22.0"
+typing-extensions = ">=4.14.1"
 numpydoc = {version = "*", optional = true} # used in utils.py
 
 uvicorn = {version = "^0.31.1", optional = true}

requirements.txt

@@ -57,6 +57,7 @@ aiohttp==3.12.14 # for network calls
 aioboto3==13.4.0 # for async sagemaker calls
 tenacity==8.5.0  # for retrying requests, when litellm.num_retries set
 pydantic>=2.11,<3 # proxy + openai req. + mcp
+typing-extensions>=4.14.1  # required by pydantic-core
 jsonschema==4.22.0 # validating json schema
 websockets==13.1.0 # for realtime API
 soundfile==0.12.1 # for audio file processing