seucirty: http smuggling (#3609)

api/requirements.txt

@@ -7,7 +7,7 @@ flask-login~=0.6.3
 flask-migrate~=4.0.5
 flask-restful~=0.3.10
 flask-cors~=4.0.0
-gunicorn~=21.2.0
+gunicorn~=22.0.0
 gevent~=23.9.1
 openai~=1.13.3
 tiktoken~=0.6.0