Add requests to dev dependencies (GH-11)

Author: ArtyomVancyan

pyproject.toml

@@ -34,6 +34,7 @@ dev = [
     "langgraph>=1.0.7",
     "pytest>=9.0.2",
     "pytest-asyncio>=1.3.0",
+    "requests>=2.20.0",
     "ruff>=0.15.0",
     "tox-uv>=1.29.0",
 ]