[pre-commit.ci] pre-commit autoupdate (#93)

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>

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -24,7 +24,7 @@ repos:
         pass_filenames: false
         args: [--config=./pyproject.toml, .]
 -   repo: https://github.com/PyCQA/flake8
-    rev: '3.9.2'
+    rev: '4.0.1'
     hooks:
         # Run flake8.
     -   id: flake8