fix: upgrade firebase-admin from 12.0.0 to 12.1.0

Snyk has created this PR to upgrade firebase-admin from 12.0.0 to 12.1.0.

See this package in npm:
https://www.npmjs.com/package/firebase-admin

See this project in Snyk:
https://app.snyk.io/org/saileshbro/project/30de8157-9baf-4726-9274-466d69094162?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot