message: Update version of nightly estimator
diff: @@ -111,7 +111,7 @@ if 'tf_nightly' in project_name:
  if 'tensorboard' in pkg:
  REQUIRED_PACKAGES[i] = 'tb-nightly ~= 2.5.0.a'
  elif 'tensorflow_estimator' in pkg:
  - REQUIRED_PACKAGES[i] = 'tf-estimator-nightly ~= 2.4.0.dev'
  + REQUIRED_PACKAGES[i] = 'tf-estimator-nightly ~= 2.5.0.dev'
  # grpcio does not build correctly on big-endian machines due to lack of
  