Bump symfony/service-contracts from 3.4.2 to 3.5.0 in /app

Bumps [symfony/service-contracts](https://github.com/symfony/service-contracts) from 3.4.2 to 3.5.0.
- [Release notes](https://github.com/symfony/service-contracts/releases)
- [Changelog](https://github.com/symfony/service-contracts/blob/main/CHANGELOG.md)
- [Commits](symfony/service-contracts@v3.4.2...v3.5.0)

---
updated-dependencies:
- dependency-name: symfony/service-contracts
  dependency-type: indirect
  update-type: version-update:semver-minor
...

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