Upgrade Firebase and Firebase-Admin (#3786)
Upgrade Firebase and Firebase-Admin (#3786)

Firebase and Firebase Admin versions are upgraded.
BlancheXu/test,BlancheXu/test,flybayer/next.js,flybayer/next.js,zeit/next.js,BlancheXu/test,azukaru/next.js,zeit/next.js,flybayer/next.js,azukaru/next.js,JeromeFitz/next.js,azukaru/next.js,JeromeFitz/next.js,flybayer/next.js,JeromeFitz/next.js,JeromeFitz/next.js,zeit/next.js,azukaru/next.js