chore(deps): 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@v5.0.0...v6.0.0)

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

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

pyproject.toml

@@ -93,7 +93,7 @@ test = [
     "hypothesis >=6.100.1,<7.0.0",
     "pytest >=8.2.2,<9.0.0",
     "pytest-custom_exit_code >=0.3.0,<1.0.0",
-    "pytest-cov >=5.0.0,<6.0.0",
+    "pytest-cov >=5.0.0,<7.0.0",
     "pytest-env >=1.0.0,<2.0.0",
     "pytest_httpserver >=1.0.10,<2.0.0",
     "syrupy >=4.0.0,<5.0.0",