Bump nbqa from 1.8.5 to 1.9.1

Bumps [nbqa](https://github.com/nbQA-dev/nbQA) from 1.8.5 to 1.9.1.
- [Release notes](https://github.com/nbQA-dev/nbQA/releases)
- [Changelog](https://github.com/nbQA-dev/nbQA/blob/main/docs/history.rst)
- [Commits](nbQA-dev/nbQA@1.8.5...1.9.1)

---
updated-dependencies:
- dependency-name: nbqa
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>