build(deps-dev): bump pytest-xdist from 2.4.0 to 2.5.0 in /requirements

Bumps [pytest-xdist](https://github.com/pytest-dev/pytest-xdist) from 2.4.0 to 2.5.0.
- [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@v2.4.0...v2.5.0)

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

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

requirements/requirements-ci.txt

@@ -609,7 +609,7 @@ pytest-random==0.2
     # via -r requirements-dev.txt
 pytest-select==0.1.2
     # via -r requirements-dev.txt
-pytest-xdist==2.4.0
+pytest-xdist==2.5.0
     # via -r requirements-dev.txt
 python-dateutil==2.8.1
     # via

requirements/requirements-dev.txt

@@ -519,7 +519,7 @@ pytest-random==0.2
     # via -r requirements-dev.in
 pytest-select==0.1.2
     # via -r requirements-dev.in
-pytest-xdist==2.4.0
+pytest-xdist==2.5.0
     # via -r requirements-dev.in
 python-dateutil==2.8.1
     # via faker