Bump symfony/yaml from 7.4.10 to 7.4.13 in /backend (#1628)

Bumps [symfony/yaml](https://github.com/symfony/yaml) from 7.4.10 to 7.4.13.
- [Release notes](https://github.com/symfony/yaml/releases)
- [Changelog](https://github.com/symfony/yaml/blob/8.1/CHANGELOG.md)
- [Commits](symfony/yaml@v7.4.10...v7.4.13)

---
updated-dependencies:
- dependency-name: symfony/yaml
  dependency-version: 7.4.13
  dependency-type: indirect
...

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