core: use ruff.target-version instead (#26634)

tested on one of the replacement cases and seems to work! ![ScreenShot 2024-09-18 at 02 02 43PM](https://github.com/user-attachments/assets/7170975a-2542-43ed-a203-d4126c6a2c81)
langchain-ai · Sep 18, 2024 · 9909354 · 9909354
1 parent 84b8313
commit 9909354
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/libs/core/pyproject.toml b/libs/core/pyproject.toml
@@ -40,6 +40,9 @@ python = ">=3.12.4"
 
 [tool.poetry.extras]
 
+[tool.ruff]
+target-version = "py39"
+
 [tool.ruff.lint]
 select = ["B", "E", "F", "I", "T201", "UP"]
 ignore = ["UP007"]