ci(docs): update to download-artifact@v4

Author: jdhoffa

.github/workflows/docs.yml

@@ -37,7 +37,7 @@ jobs:
       url: ${{ steps.deployment.outputs.page_url }}
     steps:
     - name: Download docs
-      uses: actions/download-artifact@v3
+      uses: actions/download-artifact@v4
       with:
         name: docs
     - name: Deploy to GitHub Pages