Upgrade to Firestore Emulator 1.6.2 (#3377)
Upgrade to Firestore Emulator 1.6.2 (#3377)

This just brings us up-to-date without any functional changes as far as
the SDK is concerned.
firebase/firebase-ios-sdk,firebase/firebase-ios-sdk,firebase/firebase-ios-sdk,firebase/firebase-ios-sdk,firebase/firebase-ios-sdk,firebase/firebase-ios-sdk,firebase/firebase-ios-sdk