build(deps): bump actions/upload-pages-artifact from 3 to 4 (#142)

Author: andreszorro

.github/workflows/docs.yaml

@@ -41,7 +41,7 @@ jobs:
         env:
           JEKYLL_ENV: production
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-pages-artifact@v4
         with:
           path: ./docs/_site