deps-dev(deps-dev): bump pytest-cov from 4.1.0 to 6.2.1

Bumps [pytest-cov](https://github.com/pytest-dev/pytest-cov) from 4.1.0 to 6.2.1.
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-cov@v4.1.0...v6.2.1)

---
updated-dependencies:
- dependency-name: pytest-cov
  dependency-version: 6.2.1
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

poetry.lock

@@ -50,7 +50,7 @@ all = ["fastapi"]
 # Testing framework and plugins
 pytest = "^7.0.0"
 pytest-asyncio = "^0.23.8"
-pytest-cov = "^4.1.0"
+pytest-cov = ">=4.1,<7.0"
 httpx = "^0.28.1"  # Required for FastAPI TestClient in integration tests
 
 # FastAPI is required for development and testing (even though it's optional for users)
@@ -77,7 +77,7 @@ twine = "^6.1.0"
 # Test-specific dependencies that might be needed in CI
 pytest = "^7.0.0"
 pytest-asyncio = "^0.23.8"
-pytest-cov = "^4.1.0"
+pytest-cov = ">=4.1,<7.0"
 httpx = "^0.28.1"
 # Include FastAPI for integration tests
 fastapi = ">=0.115.12,<0.117.0"