[issue43725] Create a release branch ABI stability regression test

[Pablo Galindo Salgado]

Pablo Galindo Salgado <pablogsal at gmail.com> added the comment:

Adding the rest of RM to evaluate the proposed solution

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nosy: +lukasz.langa, ned.deily, steve.dower

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue43725>
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