[pre-commit.ci] pre-commit autoupdate

updates:
- https://github.com/pre-commit/mirrors-isort → https://github.com/PyCQA/isort
- [github.com/PyCQA/isort: v5.9.1 → 5.10.1](PyCQA/isort@v5.9.1...5.10.1)
- https://gitlab.com/pycqa/flake8 → https://github.com/PyCQA/flake8
- [github.com/PyCQA/flake8: 3.9.2 → 4.0.1](PyCQA/flake8@3.9.2...4.0.1)

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -12,12 +12,12 @@ repos:
   - id: double-quote-string-fixer
   - id: end-of-file-fixer
   - id: trailing-whitespace
-- repo: https://github.com/pre-commit/mirrors-isort
-  rev: v5.9.1
+- repo: https://github.com/PyCQA/isort
+  rev: 5.10.1
   hooks:
   - id: isort
-- repo: https://gitlab.com/pycqa/flake8
-  rev: 3.9.2
+- repo: https://github.com/PyCQA/flake8
+  rev: 4.0.1
   hooks:
   - id: flake8
     additional_dependencies: ['flake8-bugbear']