Pin setuptools version to be less than 70.0.0

[hanwen-pcluste]

The setuptools 70.0.0 release broke unit tests with Python 3.12. For example: https://github.com/aws/aws-parallelcluster/actions/runs/9196405216/job/25294425565?pr=6250)

The same failure has been encountered by others. For example, vllm-project/vllm#4961

References

• Cherry-picked from Pin setuptools version to be less than 70.0.0 #6251

Checklist

• Make sure you are pointing to the right branch.
• If you're creating a patch for a branch other than develop add the branch name as prefix in the PR title (e.g. [release-3.6]).
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• Check if documentation is impacted by this change.

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