[issue38927] venv --upgrade_deps fails on Windows

[Tzu-ping Chung]

Change by Tzu-ping Chung <uranusjr at gmail.com>:


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keywords: +patch
pull_requests: +16883
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/17403

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue38927>
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