Update firestore.rules
Update firestore.rules

Biweekly metrics are having their epsilon values changed from 10.2 to 8.
To avoid metrics with different epsilons ending in the same bucket, we decided to have metrics with an epsilon of 8 will appear as -v2.
google/exposure-notifications-private-analytics-ingestion,google/exposure-notifications-private-analytics-ingestion,google/exposure-notifications-private-analytics-ingestion