requirements: update pytest-cov requirement from <5.0.1 to <6.0.1

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@v1.0...v6.0.0)

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

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

dev_requirements.txt

@@ -2,7 +2,7 @@ jupyter<1.1.2
 packaging<25.0
 pytest<8.3.4
 pytest-benchmark<5.1.1
-pytest-cov<5.0.1
+pytest-cov<6.0.1
 pytest-forked<1.7.0
 pytest-helpers-namespace<2021.12.30
 pytest-profiling<1.8.1