Bump pytest-timeout from 2.2.0 to 2.3.1

Bumps [pytest-timeout](https://github.com/pytest-dev/pytest-timeout) from 2.2.0 to 2.3.1.
- [Commits](pytest-dev/pytest-timeout@2.2.0...2.3.1)

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

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