Request for Work Authorization after Interviews?

I had my last interview for Doordash yesterday and this morning I received an email asking me for what my work authorization status is. It was from someone from their HR team who I've never talked to before. I haven't heard anything back from my recruiter. Is this a good sign that it's moving to an offer stage or do you think this is a routine email that goes out to candidates after interviews? I will message the recruiter end of this week to ask for an update but just reaching out here in case someone had a similar experience!