Clang on Windows and Keras 3.0 Updates
Updated the release notes with two major changes

1. The transition of the compiler from MSVC to CLANG on the Windows Platform to build TensorFlow-CPU builds.

2. Updating release notes to reflect changes in Keras. With 2.16 Keras 3.0 release will be default keras. Keras 3.0 has many changes compared to the previous version: Keras 2.x. The changes can break customer models. Adding information in release notes for customers who want to keep using Keras 2.x version and those who want to move to Keras 3.0.