build(deps): Bump pytest-cov in /testing/plugins_integration

Bumps [pytest-cov](https://github.com/pytest-dev/pytest-cov) from 4.1.0 to 5.0.0.
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/pytest-dev/pytest-cov/compare/v4.1.0...v5.0.0)

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

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

testing/plugins_integration/requirements.txt

@@ -4,7 +4,7 @@ pytest-asyncio==0.23.6
 # Temporarily not installed until pytest-bdd is fixed:
 # https://github.com/pytest-dev/pytest/pull/11785
 # pytest-bdd==7.0.1
-pytest-cov==4.1.0
+pytest-cov==5.0.0
 pytest-django==4.8.0
 pytest-flakes==4.0.5
 pytest-html==4.1.1