chore(deps): update dependency typing-extensions to v4.3.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
typing-extensions (changelog)	==4.2.0 -> ==4.3.0

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Release Notes

python/typing_extensions

v4.3.0

• Add typing_extensions.NamedTuple, allowing for generic NamedTuples on
  Python <3.11 (backport from python/cpython#​92027, by Serhiy Storchaka). Patch
  by Alex Waygood (@​AlexWaygood).
• Adjust typing_extensions.TypedDict to allow for generic TypedDicts on
  Python <3.11 (backport from python/cpython#​27663, by Samodya Abey). Patch by
  Alex Waygood (@​AlexWaygood).

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[codecov]

Codecov Report

Merging #253 (16b5ed2) into main (9d72b3c) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##              main      #253   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            2         2           
  Lines          156       156           
=========================================
  Hits           156       156           

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