Bump nbstripout from 0.8.2 to 0.9.0

Bumps [nbstripout](https://github.com/kynan/nbstripout) from 0.8.2 to 0.9.0.
- [Release notes](https://github.com/kynan/nbstripout/releases)
- [Changelog](https://github.com/kynan/nbstripout/blob/main/CHANGELOG.md)
- [Commits](kynan/nbstripout@0.8.2...0.9.0)

---
updated-dependencies:
- dependency-name: nbstripout
  dependency-version: 0.9.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

poetry.lock

@@ -90,7 +90,7 @@ pygments = "^2.15"
 # Notebooks
 ipython = "^8.14.0"
 notebook = { version = "^7.1.1", markers = "os.name != 'nt'" }
-nbstripout = ">=0.7.1,<0.9.0"
+nbstripout = ">=0.7.1,<0.10.0"
 papermill = { version = "^2.6", markers = "os.name != 'nt'" }
 six = "*" # missing papermill dependency