Update pytest-cov requirement from ~=6.2 to ~=6.3 (#2817)

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/v6.2.0...v6.3.0)

---
updated-dependencies:
- dependency-name: pytest-cov
  dependency-version: 6.3.0
  dependency-type: direct:production
...

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