Update pytest-cov requirement from <7,>=3 to >=3,<8 (#5104)

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@v3.0.0...v7.0.0)

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

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

Author: dependabot[bot]

pyproject.toml

@@ -68,7 +68,7 @@ test = [
     "pandas~=2.0",
     "pluggy>=1.0",
     "pre-commit>=2.9.2,<5.0",  # The hook `mypy` requires pre-commit version 2.9.2.
-    "pytest-cov>=3,<7",
+    "pytest-cov>=3,<8",
     "pytest-mock>=1.7.1,<4.0",
     "pytest-xdist[psutil]>=2.2.1,<4.0",
     "pytest>=7.2,<9.0",