Update Unity SDK dependencies - Tue May 07 2024 (#1016)

* Update Unity SDK dependencies - Tue May 07 2024

> Created by [Firebase Unity SDK build workflow](https://github.com/firebase/firebase-unity-sdk/actions/runs/8992406527).

* Update readme.md

* Update readme.md

---------

Co-authored-by: firebase-workflow-trigger-bot <firebase-workflow-trigger-bot@google.com>
Co-authored-by: a-maurice <amaurice@google.com>

cmake/firebase_unity_version.cmake

@@ -27,7 +27,7 @@ set(FIREBASE_UNITY_JAR_RESOLVER_VERSION "1.2.179"
 )
 
 # https://github.com/firebase/firebase-cpp-sdk
-set(FIREBASE_CPP_SDK_PRESET_VERSION "v11.10.0"
+set(FIREBASE_CPP_SDK_PRESET_VERSION "v12.0.0"
    CACHE STRING
   "Version tag of Firebase CPP SDK to download (if no local or not passed in) and use (no trailing .0)"
 )

docs/readme.md

@@ -71,8 +71,15 @@ Support
 
 Release Notes
 -------------
-### Upcoming
+### 12.0.0
 - Changes
+    - General: Update to Firebase C++ SDK version 12.0.0.
+    - General (Android): Update to Firebase Android BoM version 33.0.0.
+    - General (Android): Updated minSdkVersion to 23, and targetSdkVersion
+      and compileSdkVersion to 34.
+    - General (iOS): Update to Firebase Cocoapods version 10.25.0.
+    - General (iOS): Minimum iOS deployment target is now 13.0.
+    - General: Minimum supported editor version is now Unity 2020.
     - Auth: Remove deprecated calls involving `SignInResult`, most of
       which were appended with `_DEPRECATED`.
     - Remote Config: Remove deprecated `ConfigSettings.MinimumFetchInternalInMilliseconds`,