Update dependency pytest to v8.3.1 (#346)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [pytest](https://github.com/pytest-dev/pytest)
([changelog](https://docs.pytest.org/en/stable/changelog.html)) |
`8.2.2` -> `8.3.1` |
[![age](https://developer.mend.io/api/mc/badges/age/pypi/pytest/8.3.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/pypi/pytest/8.3.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/pypi/pytest/8.2.2/8.3.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/pytest/8.2.2/8.3.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

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

###
[`v8.3.1`](https://github.com/pytest-dev/pytest/releases/tag/8.3.1)

[Compare
Source](https://github.com/pytest-dev/pytest/compare/8.3.0...8.3.1)

# pytest 8.3.1 (2024-07-20)

The 8.3.0 release failed to include the change notes and docs for the
release. This patch release remedies this. There are no other changes.

###
[`v8.3.0`](https://github.com/pytest-dev/pytest/compare/8.2.2...8.3.0)

[Compare
Source](https://github.com/pytest-dev/pytest/compare/8.2.2...8.3.0)

</details>

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