[issue39789] Update Windows release build machines to latest versions

[Steve Dower]

New submission from Steve Dower <steve.dower at python.org>:

Shouldn't have any impact at all, but I'm going to mention it here so it gets in the NEWS file. Just in case someone hits an obscure edge case and is trying to find out what changed.

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assignee: steve.dower
components: Windows
messages: 362931
nosy: paul.moore, steve.dower, tim.golden, zach.ware
priority: normal
severity: normal
status: open
title: Update Windows release build machines to latest versions
versions: Python 3.8, Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39789>
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