loongson/pypi: links for idna

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

loongson/pypi idna-3.3-py3-none-any.whl
loongson/pypi idna-3.2-py3-none-any.whl
loongson/pypi idna-2.10-py2.py3-none-any.whl
loongson/pypi idna-2.8-py2.py3-none-any.whl
loongson/pypi idna-2.6-py2.py3-none-any.whl