increase limits memory for heavy workers
With 34Gi it fails because of OOMs when processing `split-duckdb-index` for some Wikipedia configs like 20231101.es and 20231101.en when creating index step.


increase limits memory for heavy workers: With 34Gi it fails because of OOMs when processing `split-duckdb-index` for some Wikipedia configs like 20231101.es and 20231101.en when creating index step.

