Bump pyfakefs from 5.5.0 to 5.6.0

Bumps [pyfakefs](https://github.com/pytest-dev/pyfakefs) from 5.5.0 to 5.6.0.
- [Release notes](https://github.com/pytest-dev/pyfakefs/releases)
- [Changelog](https://github.com/pytest-dev/pyfakefs/blob/main/CHANGES.md)
- [Commits](pytest-dev/pyfakefs@v5.5.0...v5.6.0)

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

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