fix: upgrade firebase-admin from 12.1.1 to 12.2.0 (#55)

Snyk has created this PR to upgrade firebase-admin from 12.1.1 to 12.2.0.

See this package in npm:
firebase-admin

See this project in Snyk:
https://app.snyk.io/org/saileshbro/project/01d8ed0f-b3d5-4250-ac76-d175de0da5d9?utm_source=github&utm_medium=referral&page=upgrade-pr

Co-authored-by: snyk-bot <[email protected]>

Author: saileshbro