chore(deps): bump faker from 40.12.0 to 40.18.0 in /backend (#262)

Bumps [faker](https://github.com/joke2k/faker) from 40.12.0 to 40.18.0.
- [Release notes](https://github.com/joke2k/faker/releases)
- [Changelog](https://github.com/joke2k/faker/blob/v40.18.0/CHANGELOG.md)
- [Commits](https://github.com/joke2k/faker/compare/v40.12.0...v40.18.0)

---
updated-dependencies:
- dependency-name: faker
  dependency-version: 40.18.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

backend/requirements.txt

@@ -51,7 +51,7 @@ python-json-logger==2.0.7
 pytest==9.0.3
 pytest-asyncio==1.3.0
 pytest-cov==7.1.0
-faker==40.12.0
+faker==40.18.0
 
 # Utilities
 python-dotenv==1.2.2