⬆️ Bump poetry from 1.3.1 to 1.3.2 in /docs

Bumps [poetry](https://github.com/python-poetry/poetry) from 1.3.1 to 1.3.2.
- [Release notes](https://github.com/python-poetry/poetry/releases)
- [Changelog](https://github.com/python-poetry/poetry/blob/master/CHANGELOG.md)
- [Commits](python-poetry/poetry@1.3.1...1.3.2)

---
updated-dependencies:
- dependency-name: poetry
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

docs/requirements.txt

@@ -1,4 +1,4 @@
-poetry==1.3.1
+poetry==1.3.2
 
 # Documentation building
 emoji==2.2.0