chore(deps): update dependency litellm to v1.61.15 [security]

Author: renovate[bot]

requirements.txt

@@ -94,7 +94,7 @@ webencodings==0.5.1
 websockets==12.0
 yarg==0.1.9
 google-generativeai==0.7.2
-litellm==1.44.8
+litellm==1.61.15
 pyjwt==2.9.0
 sqlalchemy==2.0.35
 passlib==1.7.4