Bump pytest-xdist from 3.5.0 to 3.6.1 in /extra_requirements

Bumps [pytest-xdist](https://github.com/pytest-dev/pytest-xdist) from 3.5.0 to 3.6.1.
- [Release notes](https://github.com/pytest-dev/pytest-xdist/releases)
- [Changelog](https://github.com/pytest-dev/pytest-xdist/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-xdist@v3.5.0...v3.6.1)

---
updated-dependencies:
- dependency-name: pytest-xdist
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

extra_requirements/requirements-tests.txt

@@ -18,7 +18,7 @@ pandas==1.5.3
 psutil==5.9.7
 pytest==8.2.1
 pytest-runner==6.0.1
-pytest-xdist==3.5.0
+pytest-xdist==3.6.1
 PyYAML==6.0.1
 scipy==1.10.1; python_version=="3.8"
 scipy==1.10.1; python_version>"3.8"