loongson/pypi: links for reportlab

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

loongson/pypi reportlab-3.3.0.tar.gz
loongson/pypi reportlab-3.3.0-cp39-cp39-linux_loongarch64.whl
loongson/pypi reportlab-3.3.0-cp37-cp37m-linux_loongarch64.whl
loongson/pypi reportlab-3.3.0-cp36-cp36m-linux_loongarch64.whl
loongson/pypi reportlab-3.3.0-cp27-cp27mu-linux_loongarch64.whl