ci: bump peaceiris/actions-gh-pages to v4.1

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: laurynas-biveinis

.github/workflows/docs.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Generate docs
         run: doxygen Doxyfile
       - name: Deploy docs
-        uses: peaceiris/actions-gh-pages@v4 # zizmor: ignore[unpinned-uses]
+        uses: peaceiris/actions-gh-pages@v4.1 # zizmor: ignore[unpinned-uses]
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./docs/html/