chore(deps): update dependency pytest-cov to v7.1.0 (#978)

This PR contains the following updates:

| Package | Change |
[Age](https://docs.renovatebot.com/merge-confidence/) |
[Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [pytest-cov](https://redirect.github.com/pytest-dev/pytest-cov)
([changelog](https://pytest-cov.readthedocs.io/en/latest/changelog.html))
| `==7.0.0` → `==7.1.0` |
![age](https://developer.mend.io/api/mc/badges/age/pypi/pytest-cov/7.1.0?slim=true)
|
![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/pytest-cov/7.0.0/7.1.0?slim=true)
|

---

### Release Notes

<details>
<summary>pytest-dev/pytest-cov (pytest-cov)</summary>

###
[`v7.1.0`](https://redirect.github.com/pytest-dev/pytest-cov/blob/HEAD/CHANGELOG.rst#710-2026-03-21)

[Compare
Source](https://redirect.github.com/pytest-dev/pytest-cov/compare/v7.0.0...v7.1.0)

- Fixed total coverage computation to always be consistent, regardless
of reporting settings.
Previously some reports could produce different total counts, and
consequently can make --cov-fail-under behave different depending on
  reporting options.
See `#&#8203;641
<https://github.com/pytest-dev/pytest-cov/issues/641>`\_.

- Improve handling of ResourceWarning from sqlite3.

The plugin adds warning filter for sqlite3 `ResourceWarning` unclosed
database (since 6.2.0).
It checks if there is already existing plugin for this message by
comparing filter regular expression.
When filter is specified on command line the message is escaped and does
not match an expected message.
A check for an escaped regular expression is added to handle this case.

With this fix one can suppress `ResourceWarning` from sqlite3 from
command line::

pytest -W "ignore:unclosed database in \<sqlite3.Connection object
at:ResourceWarning" ...

- Various improvements to documentation.
Contributed by Art Pelling in `#&#8203;718
<https://github.com/pytest-dev/pytest-cov/pull/718>`\_ and
"vivodi" in `#&#8203;738
<https://github.com/pytest-dev/pytest-cov/pull/738>`*.
Also closed `#&#8203;736
<https://github.com/pytest-dev/pytest-cov/issues/736>`*.

- Fixed some assertions in tests.
Contributed by in Markéta Machová in `#&#8203;722
<https://github.com/pytest-dev/pytest-cov/pull/722>`\_.

- Removed unnecessary coverage configuration copying (meant as a backup
because reporting commands had configuration side-effects before
coverage 5.0).

</details>

---

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requirements-test.txt

@@ -1,6 +1,6 @@
 pytest==9.0.2
 pytest-pep8==1.0.6
-pytest-cov==7.0.0
+pytest-cov==7.1.0
 pytest-aiohttp==1.1.0
 pytest-asyncio==1.3.0
 responses==0.26.0