Bump pytest from 8.3.5 to 8.4.0 in the python-updates group

Bumps the python-updates group with 1 update: [pytest](https://github.com/pytest-dev/pytest).


Updates `pytest` from 8.3.5 to 8.4.0
- [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:production
  update-type: version-update:semver-minor
  dependency-group: python-updates
...

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

Author: dependabot[bot]

install/testing_requirements.txt

@@ -1,6 +1,6 @@
 flake8==7.2.0
 coverage>=7.5
-pytest==8.3.5
+pytest==8.4.0
 pytest-cov==6.1.1
 pytest-timeout==2.4.0
 mock==5.2.0