Update dependency typing-extensions to v4.12.2

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
typing-extensions (changelog)	==4.8.0 -> ==4.12.2

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Release Notes

python/typing_extensions (typing-extensions)

v4.12.2

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• Fix regression in v4.12.0 where specialization of certain
  generics with an overridden __eq__ method would raise errors.
  Patch by Jelle Zijlstra.
• Fix tests so they pass on 3.13.0b2

v4.12.1

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• Preliminary changes for compatibility with the draft implementation
  of PEP 649 in Python 3.14. Patch by Jelle Zijlstra.
• Fix regression in v4.12.0 where nested Annotated types would cause
  TypeError to be raised if the nested Annotated type had unhashable
  metadata. Patch by Alex Waygood.

v4.12.0

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This release is mostly the same as 4.12.0rc1 but fixes one more
longstanding bug.

• Fix incorrect behaviour of typing_extensions.ParamSpec on Python 3.8 and
  3.9 that meant that
  isinstance(typing_extensions.ParamSpec("P"), typing.TypeVar) would have a
  different result in some situations depending on whether or not a profiling
  function had been set using sys.setprofile. Patch by Alex Waygood.

v4.11.0

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This feature release provides improvements to various recently
added features, most importantly type parameter defaults (PEP 696).

There are no changes since 4.11.0rc1.

v4.10.0

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This feature release adds support for PEP 728 (TypedDict with extra
items) and PEP 742 (TypeIs).

There are no changes since 4.10.0rc1.

v4.9.0

Compare Source

This feature release adds typing_extensions.ReadOnly, as specified
by PEP 705, and makes various other improvements, especially to
@typing_extensions.deprecated().

There are no changes since 4.9.0rc1.

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