Bump actions/upload-artifact from 4.3.1 to 4.3.6

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4.3.1 to 4.3.6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4.3.1...v4.3.6)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

.github/workflows/publish.yml

@@ -26,7 +26,7 @@ jobs:
     - name: Build & Publish
       run: python -m mkdocs gh-deploy
     - run: git config user.name 'github-actions[bot]' && git config user.email 'github-actions[bot]@users.noreply.github.com'
-    - uses: actions/upload-artifact@v4.3.1
+    - uses: actions/upload-artifact@v4.3.6
       with:
         path: './site'