Bump pytest-cov from 5.0.0 to 6.0.0

Bumps [pytest-cov](https://github.com/pytest-dev/pytest-cov) from 5.0.0 to 6.0.0.
- [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
  update-type: version-update:semver-major
...

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

setup.py

@@ -58,7 +58,7 @@
                 "markdown-include==0.8.1",
                 "markdown-katex==202406.1035",
             ],
-            "tests": ["pytest==8.3.2", "pytest-cov==5.0.0"],
+            "tests": ["pytest==8.3.2", "pytest-cov==6.0.0"],
             "all-electron": ["pawpyseed==0.7.1"],
             "dev": ["pre-commit==3.8.0"],
         },