Enable [cloud_firestore_mocks](https://pub.dev/packages/cloud_firestore_mocks) tests when the library is updated to depend on the latest firebase libraries. Revert https://github.com/dibbs-team/dibbs/pull/119/commits/340b9555a41db458f9093a352ffe8fc617c631c8 and update the library.
Enable cloud_firestore_mocks tests when the library is updated to depend on the latest firebase libraries.
Revert 340b955 and update the library.