⬆️ Update pytest requirement from ~=8.3.3 to ~=8.4.0

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@8.3.3...8.4.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements.dev.txt

@@ -2,6 +2,6 @@ anyio~=4.9.0
 autoflake~=2.3.1
 black~=25.1.0
 isort~=6.0.0
-pytest~=8.3.3
+pytest~=8.4.0
 pytest-mock~=3.14.0
 ruff~=0.11.0