Bump pyproject-api from 1.8.0 to 1.9.0 (#3426)

Bumps [pyproject-api](https://github.com/tox-dev/pyproject-api) from 1.8.0 to 1.9.0.
- [Release notes](https://github.com/tox-dev/pyproject-api/releases)
- [Commits](https://github.com/tox-dev/pyproject-api/compare/1.8.0...1.9.0)

---
updated-dependencies:
- dependency-name: pyproject-api
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

test-requirements.txt

@@ -165,7 +165,7 @@ progressbar33==2.4
     # via modoboa (pyproject.toml)
 pycparser==2.22
     # via cffi
-pyproject-api==1.8.0
+pyproject-api==1.9.0
     # via tox
 python-dateutil==2.9.0.post0
     # via