message: Correct Keras loading warning message.
  The warning message says 2.4, when it should say 2.5 (or tf-nightly). Only SavedModel exported in tf-nightly have the keras_metadata file.
diff: @@ -133,7 +133,7 @@ def load(path, compile=True, options=None): # pylint: disable=redefined-builtin
  raise IOError('Cannot parse keras metadata {}: {}.'
  .format(path_to_metadata_pb, str(e)))
  else:
  - logging.warning('SavedModel saved prior to TF 2.4 detected when loading '
  + logging.warning('SavedModel saved prior to TF 2.5 detected when loading '
  'Keras model. Please ensure that you are saving the model '
  'with model.save() or tf.keras.models.save_model(), *NOT* '
  'tf.saved_model.save(). To confirm, there should be a file '
  