loongson/pypi: links for rpds-py

INFO: Because this project isn't in the mirror_whitelist, no releases from root/pypi are included.

loongson/pypi rpds_py-0.18.1-cp38-cp38-linux_loongarch64.whl
loongson/pypi rpds_py-0.13.2-cp38-cp38-linux_loongarch64.whl
loongson/pypi rpds_py-0.9.2-cp38-cp38-linux_loongarch64.whl