chore(deps): update dependency pytest-cov to >=6,<6.3 (#506)

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,<6.2` -> `>=6,<6.3` |
[![age](https://developer.mend.io/api/mc/badges/age/pypi/pytest-cov/6.2.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/pypi/pytest-cov/6.2.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/pypi/pytest-cov/6.1.1/6.2.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/pytest-cov/6.1.1/6.2.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

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

###
[`v6.2.1`](https://redirect.github.com/pytest-dev/pytest-cov/blob/HEAD/CHANGELOG.rst#621-2025-06-12)

[Compare
Source](https://redirect.github.com/pytest-dev/pytest-cov/compare/v6.2.0...v6.2.1)

- Added a version requirement for pytest's pluggy dependency (1.2.0,
released 2023-06-21) that has the required new-style hookwrapper API.
-   Removed deprecated license classifier (packaging).
- Disabled coverage warnings in two more situations where they have no
value:

    -   "module-not-measured" in workers
    -   "already-imported" in subprocesses

###
[`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>

---

### Configuration

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are satisfied.

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rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
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---

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---

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setup.py

@@ -50,7 +50,7 @@
             "coverage>=7.8,<7.9",
             "pylint>=3,<3.4",
             "pytest>=8,<8.5",
-            "pytest-cov>=6,<6.2",
+            "pytest-cov>=6,<6.3",
             "mypy>=1.16,<1.17",
             "types-python-dateutil",
             "types-requests",