[pre-commit.ci] pre-commit autoupdate (#3353)

updates:
- [github.com/PyCQA/flake8: 3.9.2 → 4.0.1](PyCQA/flake8@3.9.2...4.0.1)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

.pre-commit-config.yaml

@@ -79,7 +79,7 @@ repos:
 
 # Flake8 also supports pre-commit natively (same author)
 - repo: https://github.com/PyCQA/flake8
-  rev: 3.9.2
+  rev: 4.0.1
   hooks:
   - id: flake8
     additional_dependencies: &flake8_dependencies