Update dependency test/pytest to v8 (#40)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [test/pytest](https://docs.pytest.org/en/latest/)
([source](https://togithub.com/pytest-dev/pytest),
[changelog](https://docs.pytest.org/en/stable/changelog.html)) |
`==7.4.4` -> `==8.0.0` |
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|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/pypi/test%2fpytest/8.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
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|
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---

### Release Notes

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

###
[`v8.0.0`](https://togithub.com/pytest-dev/pytest/compare/7.4.4...8.0.0)

[Compare
Source](https://togithub.com/pytest-dev/pytest/compare/7.4.4...8.0.0)

</details>

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Author: lettuce-bot[bot]

pyproject.toml

@@ -30,7 +30,7 @@ style = [
 ]
 
 test = [
-  "pytest==7.4.4",
+  "pytest==8.0.0",
   "httpx==0.26.0"
 ]