[1.x]: bump orchestra/testbench from 6.43.2 to 6.43.3 (#404)

Bumps [orchestra/testbench](https://github.com/orchestral/testbench) from 6.43.2 to 6.43.3.
- [Release notes](https://github.com/orchestral/testbench/releases)
- [Changelog](https://github.com/orchestral/testbench/blob/v6.43.3/CHANGELOG-6.x.md)
- [Commits](orchestral/testbench@v6.43.2...v6.43.3)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]