[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

pylint/checkers/classes/class_checker.py

@@ -886,7 +886,7 @@ def _check_proper_bases(self, node: nodes.ClassDef) -> None:
             ):
                 members = ancestor.getattr("__members__")
                 if members and isinstance(members[0], nodes.Dict) and members[0].items:
-                    member_names = set(item[1].name for item in members[0].items)
+                    member_names = {item[1].name for item in members[0].items}
                     member_names.discard("__slots__")
                     if not member_names:
                         return