loongson/pypi: links for pypdfium2
INFO: Because this project isn't in the mirror_whitelist, no releases from root/pypi are included.
loongson/pypi pypdfium2-4.30.1-py3-none-linux_loongarch64.whl
loongson/pypi pypdfium2-4.16.0-py3-none-linux_loongarch64.whl