Fixed the imbalanced classification notebook to work for TensorFlow 2.16

[priankakariatyml]

No description provided.

[github-actions]

Preview

Preview and run these notebook edits with Google Colab:

• site/en/tutorials/structured_data/imbalanced_data.ipynb

Rendered notebook diffs available on ReviewNB.com.

Format and style

Use the TensorFlow docs notebook tools to format for consistent source diffs and lint for style:

$ python3 -m pip install -U --user git+https://github.com/tensorflow/docs

$ python3 -m tensorflow_docs.tools.nbfmt notebook.ipynb

$ python3 -m tensorflow_docs.tools.nblint --arg=repo:tensorflow/docs notebook.ipynb

If commits are added to the pull request, synchronize your local branch: git pull origin imbalanced_classification_tf_2.16_fixes

[MarkDaoust]

Hi, thanks for sending the PR.

Please clear the outputs and apply standard formatting to make the diff reviewable.