Update dependency coverage to v7.4.3

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
coverage	==7.4.2 -> ==7.4.3

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Release Notes

nedbat/coveragepy (coverage)

v7.4.3

Compare Source

• Fix: in some cases, coverage could fail with a RuntimeError: "Set changed
  size during iteration." This is now fixed, closing issue 1733_.

.. _issue 1733:https://github.com/nedbat/coveragepy/issues/17333

.. _changes_7-4-2:

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Configuration

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.35%. Comparing base (6288da6) to head (3fe719e).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #436   +/-   ##
=======================================
  Coverage   97.35%   97.35%           
=======================================
  Files           9        9           
  Lines         945      945           
=======================================
  Hits          920      920           
  Misses         25       25           

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