RenovateBot: Update dependency coverage to v7.4.1

This MR contains the following updates:

Package	Update	Change
coverage	patch	==7.4.0 -> ==7.4.1

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Release Notes

nedbat/coveragepy (coverage)

v7.4.1

Compare Source

• Python 3.13.0a3 is supported.

• Fix: the JSON report now includes an explicit format version number, closing issue 1732_.

.. _issue 1732: https://github.com/nedbat/coveragepy/issues/1732

.. _changes_7-4-0:

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