pyproject.toml: Enable all N checks (MR 2537)

pyproject.toml

@@ -37,7 +37,7 @@ target-version = "py310"
 # RUF021: Could be fixed if someone cares about this.
 # RUF052: Needs a lot of changes, feel free to fix and then remove this ignore.
 extend-ignore = ["RUF021", "RUF052"]
-extend-select = ["CPY001", "PIE", "RUF", "UP"]
+extend-select = ["CPY001", "N", "PIE", "RUF", "UP"]
 preview = true
 
 [tool.ruff.lint.extend-per-file-ignores]