[issue38270] Tests: Avoid MD5 or check for MD5 availablity

[Christian Heimes]

Change by Christian Heimes <lists at cheimes.de>:


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pull_requests: +16015
pull_request: https://github.com/python/cpython/pull/16437

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue38270>
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