chore(deps-dev): bump pytest-cov in /requirements in the pytest group

Bumps the pytest group in /requirements with 1 update: [pytest-cov](https://github.com/pytest-dev/pytest-cov).


Updates `pytest-cov` from 6.3.0 to 7.0.0
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-cov@v6.3.0...v7.0.0)

---
updated-dependencies:
- dependency-name: pytest-cov
  dependency-version: 7.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: pytest
...

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

Author: dependabot[bot]

requirements/dev.txt

@@ -2,7 +2,7 @@
 
 coverage==7.10.2; python_version>="3.9"
 coverage==7.6.1; python_version<"3.9"
-pytest-cov==6.3.0; python_version>="3.9"
+pytest-cov==7.0.0; python_version>="3.9"
 pytest-cov==5.0.0; python_version<"3.9"