message: Pin keras_preprocessing to 1.1.0 instead of accidentally installing 1.1.1 during test
diff: @@ -57,7 +57,7 @@ REQUIRED_PACKAGES = [
  'gast == 0.2.2',
  'google_pasta >= 0.1.6',
  'keras_applications >= 1.0.8',
  - 'keras_preprocessing >= 1.1.0',
  + 'keras_preprocessing == 1.1.0',
  'numpy >= 1.16.0, < 2.0',
  'opt_einsum >= 2.3.2',
  'protobuf >= 3.8.0',
  