⬆ Bump actions/upload-artifact from 2 to 3 (#5148)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/build-docs.yml

@@ -36,7 +36,7 @@ jobs:
         run: python3.7 ./scripts/docs.py build-all
       - name: Zip docs
         run: bash ./scripts/zip-docs.sh
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v3
         with:
           name: docs-zip
           path: ./docs.zip