build(deps-dev): Update pytest-cov requirement in /packages/agent-os (#878)

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@v4.0.0...v7.1.0)

---
updated-dependencies:
- dependency-name: pytest-cov
  dependency-version: 7.1.0
  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]

packages/agent-os/pyproject.toml

@@ -101,7 +101,7 @@ hypervisor = [
 dev = [
     "pytest>=7.0.0,<8.0",
     "pytest-asyncio>=0.21.0,<1.0",
-    "pytest-cov>=4.0.0,<5.0",
+    "pytest-cov>=4.0.0,<8.0",
     "mypy>=1.0.0,<2.0",
     "ruff>=0.1.0,<1.0",
     "import-linter>=2.0,<3.0",