Bump actions/upload-artifact from 4.3.4 to 4.3.6 (#173)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4.3.4 to 4.3.6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4.3.4...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] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/pythonpackage.yml

@@ -62,7 +62,7 @@ jobs:
       run: |
         pytest --cov=devolo_home_control_api
     - name: Preserve coverage
-      uses: actions/[email protected].4
+      uses: actions/[email protected].6
       if: matrix.python-version == '3.8'
       with:
         name: coverage