Send `X-GitHub-Api-Version` when calling [GitHub] v3 API (#8669)

* send X-GitHub-Api-Version when calling GitHub v3 API

* TODO: invesitgate

* read baseUrl from config.service.baseUri

* add workflow to check for new GH api releases on schedule

* format config/default.yml to match yaml.dump() format

Co-authored-by: repo-ranger[bot] <39074581+repo-ranger[bot]@users.noreply.github.com>