⬆ Update pytest-cov requirement from <6.0.0,>=2.10.0 to >=2.10.0,<7.0.0

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@v2.10.0...v6.0.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements-tests.txt

@@ -1,7 +1,7 @@
 -e .
 
 pytest >=4.4.0,<9.0.0
-pytest-cov >=2.10.0,<6.0.0
+pytest-cov >=2.10.0,<7.0.0
 coverage[toml] >=6.2,<8.0
 pytest-xdist >=1.32.0,<4.0.0
 pytest-sugar >=0.9.4,<1.1.0