pip: bump translate-toolkit from 3.8.6 to 3.9.0

Bumps [translate-toolkit](https://github.com/translate/translate) from 3.8.6 to 3.9.0.
- [Release notes](https://github.com/translate/translate/releases)
- [Changelog](https://github.com/translate/translate/blob/master/docs/history.rst)
- [Commits](translate/translate@3.8.6...3.9.0)

---
updated-dependencies:
- dependency-name: translate-toolkit
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -28,5 +28,5 @@ sphinxcontrib-jsmath==1.0.1
 sphinxcontrib-qthelp==1.0.3
 sphinxcontrib-serializinghtml==1.1.5
 tqdm==4.65.0
-translate-toolkit==3.8.6 
+translate-toolkit==3.9.0 
 urllib3==1.26.15