[pre-commit.ci] pre-commit autoupdate (#23)

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

.pre-commit-config.yaml

@@ -8,7 +8,7 @@ repos:
     hooks:
       - id: black
   - repo: https://github.com/PyCQA/flake8
-    rev: 3.9.0
+    rev: 3.9.1
     hooks:
       - id: flake8
   - repo: https://github.com/pre-commit/mirrors-mypy