Fix h11 dependency vulnerability

See [GHSA-vqfr-h8mv-ghfj](GHSA-vqfr-h8mv-ghfj).

Author: np5

constraints.txt

@@ -59,10 +59,10 @@ grpc-google-iam-v1==0.13.1
 grpcio==1.67.1
 grpcio-status==1.67.1
 gunicorn==23.0.0
-h11==0.14.0
+h11==0.16.0
 h2==4.1.0
 hpack==4.0.0
-httpcore==1.0.6
+httpcore==1.0.9
 httpx==0.27.2
 hyperframe==6.0.1
 idna==3.10