Update typescript and eslint plugin to remove build warning

[dibarbet]

Underlying issue preventing an upgrade before has been resolved - typescript-eslint/typescript-eslint#6934

Before:

PS C:\Users\dabarbet\source\repos\vscode-csharp> npm run compile

> csharp@2.0.0-placeholder compile
> tsc -p ./ && npx eslint ./

=============

WARNING: You are currently running a version of TypeScript which is not officially supported by @typescript-eslint/typescript-estree.

You may find that it works just fine, or you may not.

SUPPORTED TYPESCRIPT VERSIONS: >=3.3.1 <5.1.0

YOUR TYPESCRIPT VERSION: 5.1.3

Please only submit bug reports when using the officially supported version.

=============

With this change:

PS C:\Users\dabarbet\source\repos\vscode-csharp> npm run compile

> csharp@2.0.0-placeholder compile
> tsc -p ./ && npx eslint ./

PS C:\Users\dabarbet\source\repos\vscode-csharp>