update upload artifact to latest version

Co-authored-by: Johnny Horvi <[email protected]>

Author: frodesundby

.github/workflows/deploy.yml

@@ -34,7 +34,7 @@ jobs:
         env:
           SLACK_TOKEN: ${{ secrets.SLACK_TOKEN }}
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v1
+        uses: actions/upload-pages-artifact@v3
         with:
           path: build/