Chore(deps-dev): Update pytest-cov requirement from <6 to <7

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@v1.0...v6.0.0)

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

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

setup.py

@@ -33,7 +33,7 @@
 extras = {
     "test": [
         "pytest<9",
-        "pytest-cov<6",
+        "pytest-cov<7",
         "lovely-pytest-docker>=1,<2",
         "grafanalib==0.7.1",
     ]