[issue43641] Update `ssl.PROTOCOL_TLSv1_2` docs since it is not the newest TLS version

[Illia Volochii]

Change by Illia Volochii <illia.volochii at gmail.com>:


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keywords: +patch
pull_requests: +23789
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/25041

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<https://bugs.python.org/issue43641>
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