[UPDATE] 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](https://github.com/pytest-dev/pytest-cov/compare/v6.0.0...v7.0.0)

---
updated-dependencies:
- dependency-name: pytest-cov
  dependency-version: 7.0.0
  dependency-type: direct:production
...

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

pyproject.toml

@@ -74,7 +74,7 @@ dev = [
 tests = [
     "freezegun<2.0.0,>=1.5.1",
     "pytest<9.0.0,>=8.3.5",
-    "pytest-cov<7.0.0,>=6.0.0",
+    "pytest-cov>=6.0.0,<8.0.0",
     "pytest-django<5.0.0,>=4.10.0",
     "model-bakery<2.0.0,>=1.20.4",
     "beautifulsoup4>=4.13.3,<5",