wrong params given to layers in squeeze_excitation

[wranai]

This here for squeeze_excitation seems to be incorrect: s is just getting overwritten in each line since the layers work on x.

    s = x


    s = tf.keras.layers.GlobalAveragePooling2D()(s)
    s = tf.keras.layers.Dense(output_filters // reduction, activation="relu")(x)
    s = tf.keras.layers.Dense(output_filters, activation="sigmoid")(x)
    x = tf.keras.layers.Multiply()([x, s])

[Kichang Kim]

Thanks for report. Fixed by 1f6774d