build(config.yml): add pillow to ci/cd

.circleci/config.yml

@@ -61,6 +61,7 @@ jobs:
             pip install prometheus-client==0.20.0
             pip install "pydantic==2.7.1"
             pip install "diskcache==5.6.1"
+            pip install "Pillow==10.3.0"
       - save_cache:
           paths:
             - ./venv

litellm/main.py

@@ -14,7 +14,6 @@ from functools import partial
 import dotenv, traceback, random, asyncio, time, contextvars
 from copy import deepcopy
 import httpx
-
 import litellm
 from ._logging import verbose_logger
 from litellm import (  # type: ignore