Feature Request: Update Firebase iOS SDK to v11.15.0

[ihar-va-MA]

This ticket proposes updating the Firebase iOS SDK to the latest stable version, 11.15.0, released on June 23, 2025.

The update is necessary to incorporate the latest features, improvements, and bug fixes provided by Firebase, ensuring our application benefits from the most current and optimized SDK capabilities.

Release Notes: Firebase iOS SDK Release Notes

Acceptance Criteria:

The project successfully integrates Firebase iOS SDK version 11.15.0.

All existing Firebase functionalities continue to work as expected without regressions.

New features or improvements from the 11.15.0 release are available for integration, if applicable.

The extension builds and links successfully with the updated SDK.