[issue46986] Upgrade ensurepip bundled setuptools to 60.9.3

[Ned Deily]

Ned Deily <nad at python.org> added the comment:

We should probably include this update in the next round of releases.

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nosy: +lukasz.langa, ned.deily, pablogsal
priority: normal -> release blocker

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue46986>
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