Bump pytest from 6.2.4 to 8.3.4

Bumps [pytest](https://github.com/pytest-dev/pytest) from 6.2.4 to 8.3.4.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@6.2.4...8.3.4)

---
updated-dependencies:
- dependency-name: pytest
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements-testing.txt

@@ -1,3 +1,3 @@
 flake8==6.0.0
-pytest==6.2.4
+pytest==8.3.4
 pytest-cov==2.12.1