Ban operator.attrgetter (#1585)

Author: adamtheturtle

pyproject.toml

@@ -153,6 +153,7 @@ lint.external = [
     # Vulture.
     "V",
 ]
+lint.flake8-tidy-imports.banned-api."operator.attrgetter".msg = "operator.attrgetter is banned: use a lambda instead."
 lint.flake8-tidy-imports.banned-api."typing.cast".msg = """\
     typing.cast is banned: use explicit type narrowing or a typed variable instead.\
     """