On a redirect, dynamically set the port: * FROM_PROTOCOL_DEFAULT: automatically set to 80 for HTTP and 443 for HTTPS.

                            Valid Options: FROM_PROTOCOL_DEFAULT, FROM_REQUEST_PORT
                          enum:
                          - FROM_PROTOCOL_DEFAULT
                          - FROM_REQUEST_PORT
                          type: string
                        port:

    *   Upgrade Flatbuffers v2.0.5 from v1.12.0

*   `tf.keras`:

    *   `EinsumDense` layer is moved from experimental to core. Its import path
        is moved from `tf.keras.layers.experimental.EinsumDense` to
        `tf.keras.layers.EinsumDense`.
    *   Added `tf.keras.utils.audio_dataset_from_directory` utility to easily
        generate audio classification datasets from directories of `.wav` files.