Bump pyfakefs from 5.3.5 to 5.4.0

Bumps [pyfakefs](https://github.com/pytest-dev/pyfakefs) from 5.3.5 to 5.4.0.
- [Release notes](https://github.com/pytest-dev/pyfakefs/releases)
- [Changelog](https://github.com/pytest-dev/pyfakefs/blob/main/CHANGES.md)
- [Commits](pytest-dev/pyfakefs@v5.3.5...v5.4.0)

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

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

Author: dependabot[bot]

pyproject.toml

@@ -30,7 +30,7 @@ dependencies = [
 
 
 [project.optional-dependencies]
-tests = ["pytest==8.1.1", "pytest-cov==5.0.0", "pyfakefs==5.3.5"]
+tests = ["pytest==8.1.1", "pytest-cov==5.0.0", "pyfakefs==5.4.0"]
 
 doc = [
     "Sphinx==7.2.6",