[pre-commit.ci] pre-commit autoupdate

updates:
- https://gitlab.com/pycqa/flake8 → https://github.com/PyCQA/flake8

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -13,7 +13,7 @@ repos:
     hooks:
     - id: black
       language_version: python3.8
--   repo: https://gitlab.com/pycqa/flake8
+-   repo: https://github.com/PyCQA/flake8
     rev: 4.0.1
     hooks:
     -   id: flake8