PEP 693: delay 3.12 beta 2 by a week

[hugovk]

Announced by release manager @Yhg1s in https://discuss.python.org/t/delaying-3-12-beta-2-by-a-week/27232:

Because there are a number of important bugs being worked on that impede the testing of 3.12, it would be a shame to delay all that by a month, and it’s only been a week since beta 1, I’m delaying beta 2 until next week. (In retrospect I should have realised a week is not enough for third parties to find bugs and us to fix them, so lesson learned).

(See Type object's ob_type does not get set when tp_bases is set before PyType_Ready · Issue #104614 · python/cpython · GitHub , tp_bases of object is NULL: undocumented or unintentional behavior change in 3.12? · Issue #105020 · python/cpython · GitHub , 3.12.0b1 includes backwards incompatible change to operation of super() · Issue #105035 · python/cpython · GitHub , object.h includes C++ incompatible code · Issue #105059 · python/cpython · GitHub for some of the bugs in talking about.)

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