chore: Upgrade VSCode to v1.89.1 in the Web IDE

Issue: Use VScode Fork v1.89.0 in Web IDE (#342 - closed)

What does this MR do?

It upgrades the VSCode Fork from v1.85.2 to v1.89.1 in the Web IDE.

VSCode Fork upgrade MR gitlab-web-ide-vscode-fork!80 (closed)

Demo

Web IDE source control	GitLab DUO capabilities
source_control_capabilities_web_ide.mov	gitlab_duo_functionality.mov

How to reproduce?

1. Run yarn clean && yarn start:example .
2. Ensure that the following features work:
   1. Opening files and source control (commit, create MRs, etc.)
   2. Extensions Marketplace.
   3. Code suggestions.