Bump pytest-xdist from 2.5.0 to 3.0.2

Bumps [pytest-xdist](https://github.com/pytest-dev/pytest-xdist) from 2.5.0 to 3.0.2.
- [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@v2.5.0...v3.0.2)

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

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

Author: dependabot[bot]

poetry.lock

@@ -43,7 +43,7 @@ black = "^22.3.0"
 sphinx-copybutton = "^0.5.0"
 retry = "^0.9.2"
 Flask = "^2.0.3"
-pytest-xdist = "^2.5.0"
+pytest-xdist = "^3.0.2"
 mypy = "^0.982"
 
 [build-system]