Update CI

Author: JanisV

.github/workflows/ci.yml

@@ -34,3 +34,9 @@ jobs:
       - name: Build
         working-directory: frontend
         run: npm run build
+
+      - name: Deploy to GitHub Pages
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./dist