chore(deps-dev): update pytest requirement from ~=8.3.5 to ~=8.4.0 (#2803)

Updates the requirements on [pytest](https://github.com/pytest-dev/pytest) to permit the latest version.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@8.3.5...8.4.0)

---
updated-dependencies:
- dependency-name: pytest
  dependency-version: 8.4.0
  dependency-type: direct:development
...

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Author: dependabot[bot]

requirements/dev.txt

@@ -1,6 +1,6 @@
 -r _.txt
 pylint~=3.3.7
-pytest~=8.3.5
+pytest~=8.4.0
 pytest-asyncio~=0.24.0
 # pytest-order~=1.0.1
 mypy~=1.15.0