chore(deps-dev): update pytest-cov requirement (#101)

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@v6.1.1...v7.0.0)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pyproject.toml

@@ -36,7 +36,7 @@ pyreadr = "^0.5"
 
 [tool.poetry.group.dev.dependencies]
 pytest = "^8.3.5"
-pytest-cov = "^6.1.1"
+pytest-cov = ">=6.1.1,<8.0.0"
 pytest-benchmark = ">=4,<6"
 python-semantic-release = "^9.21.0"
 mypy = "^1.15.0"