Update pytest-xdist requirement from ~=3.3 to ~=3.4

Updates the requirements on [pytest-xdist](https://github.com/pytest-dev/pytest-xdist) to permit the latest version.
- [Changelog](https://github.com/pytest-dev/pytest-xdist/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-xdist@v3.3.0...v3.4.0)

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

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

dev-requirements.txt

@@ -20,7 +20,7 @@ pytest~=7.4
 pytest-csv~=3.0
 pytest-dotenv~=0.5.2
 pytest-logbook~=1.2
-pytest-xdist~=3.3
+pytest-xdist~=3.4
 pytz~=2023.3
 tox~=4.11
 types-pytz~=2023.3