Update behat/behat requirement from ~3.3.0 to ~3.5.0 in /build/integration

Updates the requirements on [behat/behat](https://github.com/Behat/Behat) to permit the latest version.
- [Release notes](https://github.com/Behat/Behat/releases)
- [Changelog](https://github.com/Behat/Behat/blob/master/CHANGELOG.md)
- [Commits](https://github.com/Behat/Behat/commits/v3.5.0

)

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