[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

@@ -12,7 +12,7 @@ repos:
       - id: trailing-whitespace
       - id: end-of-file-fixer
 
-  - repo: https://gitlab.com/PyCQA/flake8
+  - repo: https://github.com/PyCQA/flake8
     rev: 4.0.1
     hooks:
       - id: flake8