Update dependency coverage to v7.6.7

[mend-for-github-com]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
coverage	7.6.5 -> 7.6.7

---

Release Notes

nedbat/coveragepy (coverage)

v7.6.7

Compare Source

• fix: ugh, the other assert from 7.6.5 can also be encountered in the wild,
  so it's been restored to a conditional. Sorry for the churn.

.. _changes_7-6-6:

v7.6.6

Compare Source

• One of the new asserts from 7.6.5 caused problems in real projects, as
  reported in issue 1891_. The assert has been removed.

.. _issue 1891:https://github.com/nedbat/coveragepy/issues/18911

.. _changes_7-6-5:

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box