composer(deps): Bump symfony/var-dumper from 6.4.0 to 7.0.0

Bumps [symfony/var-dumper](https://github.com/symfony/var-dumper) from 6.4.0 to 7.0.0.
- [Release notes](https://github.com/symfony/var-dumper/releases)
- [Changelog](https://github.com/symfony/var-dumper/blob/7.0/CHANGELOG.md)
- [Commits](symfony/var-dumper@v6.4.0...v7.0.0)

---
updated-dependencies:
- dependency-name: symfony/var-dumper
  dependency-type: indirect
  update-type: version-update:semver-major
...

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