We have no ruff support yet.
see https://github.com/tikv/jemallocator/issues/58

--- diff_cover-9.7.1/pyproject.toml.orig
+++ diff_cover-9.7.1/pyproject.toml
@@ -57,7 +57,6 @@
 pylint = "^3.3.4"
 black = "^25.1.0"
 isort = "^6.0.1"
-ruff = ">=0.11.10,<0.13.0"
 
 [tool.poetry.extras]
 toml = ["tomli"]