Typescript build fails when using danger for a plugin

[rohit-gohri]

The build fails with this error:

node_modules/danger/distribution/dsl/GitHubDSL.d.ts:24:10 - error TS2709: Cannot use namespace 'GitHub' as a type.

24     api: GitHub;
            ~~~~~~


Found 1 error.

The error appears with @octokit/rest v16.43.1 but not before that.

From what I could gather the distribution template in

danger-js/scripts/danger-dts.ts

Line 15 in d43ae5a

import * as GitHub from "@octokit/rest"

didn't get updated when PR #983 was done.

Also we should probably update the version in package.json to ^16.43.1