Update dependency setuptools to v61.3.1

This MR contains the following updates:

Package	Type	Update	Change
setuptools	ironbank-pypi	patch	61.3.0 -> 61.3.1

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Release Notes

pypa/setuptools

v61.3.1

Compare Source

Misc ^^^^

• #​3233: Included missing test file setupcfg_examples.txt in sdist.
• #​3233: Added script that allows developers to download setupcfg_examples.txt prior to running tests. By caching these files it should be possible to run the test suite offline.

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