[pre-commit.ci] pre-commit autoupdate

[pre-commit-ci[bot]]

updates:

• github.com/keewis/blackdoc: v0.3.8 → v0.3.9

[github-actions[bot]]

👋 Thanks for opening this PR! The Cookbook will be automatically built with GitHub Actions. To see the status of your deployment, click below. 🔍 Git commit SHA: 8b4c29c2ddda08cec1ea5cce1010a0677a9e85c5 ✅ Deployment Preview URL: https://ProjectPythia.github.io/pythia-foundations/_preview/434