Bump notebook from 6.4.11 to 6.4.12#11

dependabot[bot] wants to merge 1 commit intomasterireapps/teaching-guide-python-scraping:masterfrom

dependabot/pip/notebook-6.4.12ireapps/teaching-guide-python-scraping:dependabot/pip/notebook-6.4.12Copy head branch name to clipboard