Fix bot review exclusion logic

[hackertronix]

Builds on #13 and fixes it

1. The label being used was wrong, so fixed the name for correctly filtering the github-actions bot
2. The shouldIgnore() function had faulty logic 👇

if (pullRequest.requested_reviewers.length === 0) {
    return true  // This was incorrectly ignoring PRs
}

These should fix the PRs still being ignored. Once merged I'll manually trigger the action