Change runs-on in renovate-app-token.yaml and renovate.yaml workflows
from runners-privilegedescalation to ubuntu-latest.
Co-Authored-By: Paperclip <noreply@paperclip.ing>
workflow_call reusable workflow that exposes a GitHub App installation
token. Mend Renovate will use this token to push commits.
Refs: PRI-413
Co-authored-by: Chris Farhood <chris@farhood.org>