⬆️ Update pytest-cov requirement

Updates the requirements on [pytest-cov](https://github.com/pytest-dev/pytest-cov) to permit the latest version.
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-cov@v2.8.0...v6.0.0)

---
updated-dependencies:
- dependency-name: pytest-cov
  dependency-type: direct:development
...

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

setup.py

@@ -47,7 +47,7 @@ def _parse_requirements(path, encoding="utf-8"):
         ],
         "test": [
             "pytest>=5.4.0, <9.0.0",  # pytest==8.0.0 breaks pytest-lazy-fixture : https://github.com/TvoroG/pytest-lazy-fixture/issues/65
-            "pytest-cov>=2.8.0, <6.0.0",
+            "pytest-cov>=2.8.0, <7.0.0",
             "pytest-lazy-fixtures>=1.0.0, <2.0.0",
             "pytest-mock>=3.1.0, <4.0.0",
             "ruff>=0.5.0,<0.8.0",  # ensure consistency with pre-commit