chore(deps): update dependency pytest to v9

Author: renovate[bot]

pyproject.toml

@@ -26,7 +26,7 @@ pydantic = "^2.8.2"
 [tool.poetry.group.dev.dependencies]
 mypy = "^1.11.1"
 ruff = "^0.8.0"
-pytest = "^8.3.2"
+pytest = "^9.0.0"
 pytest-asyncio = "^0.25.0"
 python-dateutil = "^2.9.0-post.0"