Fix pyproject.toml warnings

Author: ManifoldFR

pyproject.toml

@@ -28,10 +28,12 @@ packages = ["proxsuite_nlp"]
 package-dir = {"" = "python"}
 
 [tool.ruff]
+exclude = [".git", "build*", "cmake"]
+
+[tool.ruff.lint]
 select = ["E", "F"]
 ignore = ["E501"]
-exclude = [".git", "build*", "cmake"]
 fixable = ["E"]
 
-[tool.ruff.per-file-ignores]
+[tool.ruff.lint.per-file-ignores]
 "bindings/python/proxsuite_nlp/__init__.py" = ["F401", "F403"]