[VS Code] DeprecationWarning: Buffer() is deprecated due to security and usability issues

[mburnell]

I know this issue has been reported multiple times in the past, but the older issues are all closed and it's still reproducible in 1.0.5905.

When running the following code from within a VS Code extension while the Live Share VS Code extension is installed and enabled:

const vsls = require('vsls');
const liveShare = vsls.getApi(); // await deliberately omitted, but not relevant

an error will be reported in the VS Code Developer Tools.

I've followed the steps at #3331 (comment) and the stack shows the issues are from .vscode-insiders/extensions/ms-vsliveshare.vsliveshare-1.0.5905/extension.js. Opening this file up, there are 31 usages of "new Buffer(".