patch: set httpcore to fix vulnerability with downstream h11

Author: zplata

poetry.lock

@@ -33,6 +33,7 @@ Repository = 'https://github.com/webflow/webflow-python'
 [tool.poetry.dependencies]
 python = "^3.8"
 httpx = ">=0.21.2"
+httpcore = "1.0.9"
 pydantic = ">= 1.9.2"
 pydantic-core = "^2.18.2"
 typing_extensions = ">= 4.0.0"