chore(deps): bump actions/upload-pages-artifact from 3 to 4

Bumps [actions/upload-pages-artifact](https://github.com/actions/upload-pages-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/upload-pages-artifact/releases)
- [Commits](https://github.com/actions/upload-pages-artifact/compare/v3...v4)

---
updated-dependencies:
- dependency-name: actions/upload-pages-artifact
  dependency-version: '4'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/gendocs.yml

@@ -35,7 +35,7 @@ jobs:
           bash auto_docu.sh
       - name: Upload documentation files as artifact
         id: deployment
-        uses: actions/upload-pages-artifact@v3 # or specific "vX.X.X" version tag for this action
+        uses: actions/upload-pages-artifact@v4 # or specific "vX.X.X" version tag for this action
         with:
           path: docs/build/html/