fix(chat): Update to latest DuoChat

Description

fix(DuoChat): Update to latest DuoChat

This fixes these issues:

1. Adds rendering of markdown to Duo chat #1227 (closed). Code blocks are correctly rendered while streaming.
2. Rendering of large strings in the chat: gitlab#436008 (closed)
3. We now stick to the bottom while scrolling: gitlab-ui#2372 (closed)

Related Issues

• Resolves gitlab#436008 (closed)
• Relates to gitlab-ui#2372 (closed)
• Resolves #1227 (closed)

How has this been tested?

Locally in the VS Code Extension:

What	Screenshot before	Screenshot after
Long strings input
Scrolling to the bottom and sticking there	-	Screen_Recording_2024-02-09_at_15.33.42
Markdown streaming with code block	-	Screen_Recording_2024-02-09_at_15.29.13
Markdown streaming with a list	-	Screen_Recording_2024-02-09_at_15.26.37

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation
• Chore (Related to CI or Packaging to platforms)
• Test gap