Update coverage to 7.6.11

[pyup-bot]

This PR updates coverage from 7.6.10 to 7.6.11.

Changelog

7.6.11

---------------------------

- Fix: a memory leak in CTracer has been fixed.  The details are in `issue
1924`_ and `pytest-dev 676`_.  This should reduce the memory footprint for
everyone even if it hadn't caused a problem before.

- We now ship a py3-none-any.whl wheel file.  Thanks, `Russell Keith-Magee
<pull 1914_>`_.

.. _pull 1914: https://github.com/nedbat/coveragepy/pull/1914
.. _issue 1924: https://github.com/nedbat/coveragepy/issues/1924
.. _pytest-dev 676: https://github.com/pytest-dev/pytest-cov/issues/676

.. _changes_7-6-10:

Links

• PyPI: https://pypi.org/project/coverage
• Changelog: https://data.safetycli.com/changelogs/coverage/
• Repo: https://github.com/nedbat/coveragepy