Auth deprecated methods removal (firebase#1575)

* Remove all deprecated functions and types from headers.

* Remove deprecated implementations, and move current_user logic.

* Remove deprecated functionality from Android SDK

* Remove deprecated functions and types from iOS SDK.

* Remove common deprecated code and future Fns.

* Remove deprecated tests from integration test.

* Remove all deprecated functions and such in desktop.

* Remove extraneous methods.

* Fix more build issues.

* Fix integration test usage of deprecated methods.

* Add checks for invalid user to desktop impl.

* Format code.

* Fix Android build issues.

* Add missing method back in.

* Fix Doxygen warnings.

* Remove deprecated call.

* Fix another bad deprecation

* Add release notes for removal

* Move UpdateEmail back to the right place.

* Fix unit tests to refer to non-deprecated methods.

* Finish removing AuthCompletionHandle, and fix unit tests more.

* Format code.

* Fix build error.

* Fix more unit test issues.

* Format code.

* Fix unit test build errors.

* Removed deprecated calls in unit tests.

* Test build fixes.

* Fix typo.

* Format code.

* Fix a failing test.

* Fix user test and pointer usage.

* Fix tests.

Update version number.

Update Android dependencies - Tue Mar 12 2024 (firebase#1550)

* Update Android dependencies - Tue Mar 12 2024

### Android

- com.google.firebase.firebase_bom → 32.7.4

> Created by [Update Android and iOS dependencies workflow](https://github.com/firebase/firebase-cpp-sdk/actions/runs/8256368917).

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Co-authored-by: firebase-workflow-trigger-bot <firebase-workflow-trigger-bot@google.com>
Co-authored-by: Jon Simantov <jsimantov@google.com>

Update Android dependencies - Fri Jan 19 2024 (firebase#1524)

* Update Android dependencies - Fri Jan 19 2024

[Triggered](https://github.com/firebase/firebase-android-sdk/actions/runs/7587497497) by [firebase-android-sdk Jan 19 release](firebase/firebase-android-sdk@5c1465f).

  ### Android

- com.google.firebase.firebase_bom → 32.7.1

> Created by [Update Android and iOS dependencies workflow](https://github.com/firebase/firebase-cpp-sdk/actions/runs/7587504215).

* Add release note for version, and bump C++ version.

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Co-authored-by: firebase-workflow-trigger-bot <firebase-workflow-trigger-bot@google.com>
Co-authored-by: Jon Simantov <jsimantov@google.com>

Fix typo.

Update version numbers for 11.6.0 release. (firebase#1466)

Update Android dependencies - Mon Sep 18 2023 (firebase#1448)

* Update release version to 11.5.0.

* Update readme.

* Update Android dependencies - Mon Sep 18 2023

### Android

- com.google.android.gms.play_services_ads → 22.4.0
- com.google.firebase.firebase_bom → 32.3.1

> Created by [Update Android and iOS dependencies workflow](https://github.com/firebase/firebase-cpp-sdk/actions/runs/6226059256).

* Add note about GMA Android.

* Revert play-services-ads to 22.3.0.

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Co-authored-by: Jon Simantov <jsimantov@google.com>
Co-authored-by: firebase-workflow-trigger-bot <firebase-workflow-trigger-bot@google.com>

Update release version number for M135, 11.4.0 (firebase#1421)

M134: update GMA version in readme (firebase#1390)

* m134 release update

* gma version update

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Co-authored-by: Cynthia Jiang <cynthiajiang@google.com>