Update pytest-cov requirement from ~5.0 to ~6.0 (#185)

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@v5.0.0...v6.0.0)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pyproject.toml

@@ -34,7 +34,7 @@ pympler = "1.1"
 [tool.poetry.dev-dependencies]
 pytest = "~8.3"
 pytest-asyncio = "~0.25"
-pytest-cov = "~5.0"
+pytest-cov = "~6.0"
 pytest-unordered = "~0.6"
 pre-commit = "~3.5"
 Sphinx = "~7.1"