chore(deps): update dependency typing-extensions to v4.12.2

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
typing-extensions (changelog)	==4.11.0 -> ==4.12.2

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Release Notes

python/typing_extensions (typing-extensions)

v4.12.2

Compare Source

• 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

Compare Source

• 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

Compare Source

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.

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