chore(deps): update dependency pytest-cov to v6.2.0 (#816)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [pytest-cov](https://redirect.github.com/pytest-dev/pytest-cov)
([changelog](https://pytest-cov.readthedocs.io/en/latest/changelog.html))
| `==6.1.1` -> `==6.2.0` |
[![age](https://developer.mend.io/api/mc/badges/age/pypi/pytest-cov/6.2.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/pypi/pytest-cov/6.2.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/pypi/pytest-cov/6.1.1/6.2.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/pytest-cov/6.1.1/6.2.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

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

###
[`v6.2.0`](https://redirect.github.com/pytest-dev/pytest-cov/blob/HEAD/CHANGELOG.rst#620-2025-06-11)

[Compare
Source](https://redirect.github.com/pytest-dev/pytest-cov/compare/v6.1.1...v6.2.0)

- The plugin now adds 3 rules in the filter warnings configuration to
prevent common coverage warnings being raised as obscure errors::

default:unclosed database in \<sqlite3.Connection object
at:ResourceWarning
    once::PytestCovWarning
    once::CoverageWarning

This fixes most of the bad interactions that are occurring on pytest 8.4
with `filterwarnings=error`.

The plugin will check if there already matching rules for the 3
categories
(`ResourceWarning`, `PytestCovWarning`, `CoverageWarning`) and message
(`unclosed database in <sqlite3.Connection object at`) before adding the
filters.

This means you can have this in your pytest configuration for complete
oblivion (not recommended, if that is not clear)::

    filterwarnings = \[
    "error",
"ignore:unclosed database in \<sqlite3.Connection object
at:ResourceWarning",
    "ignore::PytestCovWarning",
    "ignore::CoverageWarning",
    ]

</details>

---

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---

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requirements-test.txt

@@ -1,6 +1,6 @@
 pytest==8.4.0
 pytest-pep8==1.0.6
-pytest-cov==6.1.1
+pytest-cov==6.2.0
 pytest-aiohttp==1.1.0
 pytest-asyncio==1.0.0
 responses==0.25.7