Bump orchestra/testbench from 10.8.0 to 10.9.0

Bumps [orchestra/testbench](https://github.com/orchestral/testbench) from 10.8.0 to 10.9.0.
- [Release notes](https://github.com/orchestral/testbench/releases)
- [Changelog](https://github.com/orchestral/testbench/blob/10.x/CHANGELOG-10.x.md)
- [Commits](orchestral/testbench@v10.8.0...v10.9.0)

---
updated-dependencies:
- dependency-name: orchestra/testbench
  dependency-version: 10.9.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]