Upgrade Firebase

[sarahsporck]

Is your feature request related to a problem? Please describe. Firebase has now already moved onto version 18+, while we are stuck on 14 rn. The reason for that is that all firebase versions 15+ require use_frameworks on ios. However use_frameworks is not compatible with flipper which would mean we have to decide flipper vs firebase. There is also the option to dynamically (during runtime) link firebase on ios, however this is not really recommended. Discuss in the team what option fits us best. Version 14 also still seems to be maintained in the project, as this does not only affect us.

Describe the solution you'd like

• First discuss in the team whether we want to update, then take further action.

[f1sh1918]

Since we decided that we want to keep flipper for ios, we not gonna update firebase for now