Bump Node v18 to v20 #1
Description
webcontainer-api added support for Node v20
stackblitz/webcontainer-core#560 (comment)
TutorialKit was also updated to support Node versions larger than v18
Newest TutorialKit also has better support to collapse preview window by default
stackblitz/tutorialkit#445
Ref latest release:
https://github.com/stackblitz/tutorialkit/releases