build(deps-dev): bump behat/behat in /build/integration

Bumps [behat/behat](https://github.com/Behat/Behat) from 3.16.0 to 3.18.1.
- [Release notes](https://github.com/Behat/Behat/releases)
- [Changelog](https://github.com/Behat/Behat/blob/master/CHANGELOG.md)
- [Commits](Behat/Behat@v3.16.0...v3.18.1)

---
updated-dependencies:
- dependency-name: behat/behat
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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