build(deps): bump snok/install-poetry from 1.3 to 1.4

Bumps [snok/install-poetry](https://github.com/snok/install-poetry) from 1.3 to 1.4.
- [Release notes](https://github.com/snok/install-poetry/releases)
- [Commits](snok/install-poetry@v1.3...v1.4)

---
updated-dependencies:
- dependency-name: snok/install-poetry
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/generate-docs.yml

@@ -30,7 +30,7 @@
               python-version: ${{ matrix.python-version }}
 
           - name: Install Poetry
-            uses: snok/install-poetry@v1.3
+            uses: snok/install-poetry@v1.4
             with:
               virtualenvs-create: true
               virtualenvs-in-project: true