Pull Requests created by GitHub Actions are not correctly assigning reviewers

[felladrin]

We've noticed the team-reviewer property wasn't working for that other PR. There the reviewer was set based on the file changed, which belongs to the IDE team.

Also, due to this, our GitHub Action triggers an error like this.

So we've checked the issues from the GitHub Action and found this:

• Use of team-reviewers results in: "Could not resolve to a node with the global id of..." error peter-evans/create-pull-request#155 (comment)

Maybe we can reuse this token from Robo Quat:

• gitpod/.github/workflows/changelog.yml

  Line 32 in 864214b

  TOKEN: ${{ secrets.ROBOQUAT_AUTOMATIC_CHANGELOG }}

Or we create a new one.

Originally discussed in #11721 (comment)