Merge changelog for 3.27.3 release (#161977)

Co-authored-by: Reid Baker <hamilton.reid.baker@gmail.com>

Author: eyebrowsoffire

CHANGELOG.md

@@ -27,6 +27,11 @@ INTERNAL NOTE
 
 ## Flutter 3.27 Changes
 
+### [3.27.3](https://github.com/flutter/flutter/releases/tag/3.27.3)
+- [flutter/159212](https://github.com/flutter/flutter/issues/159212) Track (via Google Analytics) if the Dart AOT Android "Deferred Components" feature is being meaningfully used.
+- [flutter/160631](https://github.com/flutter/flutter/issues/160631) Fixes an issue with Material 3 Tab Bar animations.
+- [flutter/159289](https://github.com/flutter/flutter/issues/159289) Fixes an issue with fullscreen route transitions.
+
 ### [3.27.2](https://github.com/flutter/flutter/releases/tag/3.27.2)
 
 - [flutter/159729](https://github.com/flutter/flutter/issues/159729) Flutter module template triggers a warning when built for Android.