chore: bump google-services version

[kroikie]

Description

The current version of google-services (4.3.10) results in failing android build from a new Flutter project. This change bumps to version 4.3.15 which works with latest Flutter setup.

Type of Change

• [ ] ✨ feat -- New feature (non-breaking change which adds functionality)
• [ ] 🛠️ fix -- Bug fix (non-breaking change which fixes an issue)
• [ ] ❌ ! -- Breaking change (fix or feature that would cause existing functionality to change)
• [ ] 🧹 refactor -- Code refactor
• [ ] ✅ ci -- Build configuration change
• [ ] 📝 docs -- Documentation
• [x] 🗑️ chore -- Chore

[CLAassistant]

All committers have signed the CLA.

[russellwheatley]

Thanks @kroikie - this has already been merged here: https://github.com/invertase/flutterfire_cli/pull/200 😄