[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/psf/black: 23.1.0 → 23.9.1](psf/black@23.1.0...23.9.1)
- [github.com/PyCQA/flake8: 6.0.0 → 6.1.0](PyCQA/flake8@6.0.0...6.1.0)

.pre-commit-config.yaml

@@ -9,7 +9,7 @@ repos:
   - id: check-yaml
   - id: check-added-large-files
 - repo: https://github.com/psf/black
-  rev: 23.1.0
+  rev: 23.9.1
   hooks:
   - id: black
     args: [--config, pyproject.toml]
@@ -24,7 +24,7 @@ repos:
   - id: darglint
     args: [-v 2]  # this config makes the error messages a bit less cryptic.
 - repo: https://github.com/PyCQA/flake8
-  rev: 6.0.0
+  rev: 6.1.0
   hooks:
     - id: flake8
       args: [--exclude, nbconvert_config.py]