Update typescript-estree to v6

[kripod]

What version of TypeScript are you using?
3.2.2

What version of typescript-eslint-parser are you using?
21.0.2

What happened?

> eslint --ignore-path .gitignore "**/*.{ts,tsx}"

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

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

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

SUPPORTED TYPESCRIPT VERSIONS: ~3.1.1
`
YOUR TYPESCRIPT VERSION: 3.2.2

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

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

[armano2]

There is PR with this already: #576

[kripod]

@armano2 Unfortunately, I wasn't aware of it. Sorry for disturbing!