chore(deps-dev): Bump symfony/event-dispatcher in /build/integration

Bumps [symfony/event-dispatcher](https://github.com/symfony/event-dispatcher) from 5.4.26 to 5.4.34.
- [Release notes](https://github.com/symfony/event-dispatcher/releases)
- [Changelog](https://github.com/symfony/event-dispatcher/blob/7.0/CHANGELOG.md)
- [Commits](symfony/event-dispatcher@v5.4.26...v5.4.34)

---
updated-dependencies:
- dependency-name: symfony/event-dispatcher
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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