Update pytest-cov requirement from <5,>=4 to >=4,<6 (#1423)
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/v4.0.0...v5.0.0)
---
updated-dependencies:
- dependency-name: pytest-cov
dependency-type: direct:development
...
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