upgrade to v4

Author: purplenicole730

.github/workflows/docs.yml

@@ -39,7 +39,7 @@ jobs:
         run: ls etc/docs/api/current
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: html-docs
           path: etc/docs/api/current