Update onboarding issue label expiration 2026-01-02

Create new token https://gitlab.com/gitlab-community/community-members/onboarding/-/settings/access_tokens

• Access level: Reporter
• Scope: API

Update https://gitlab.com/gitlab-community/meta/-/settings/ci_cd#js-cicd-variables-settings UPDATE_ONBOARDING_ISSUE_LABEL_GITLAB_API_TOKEN