loongson/pypi: links for pydantic

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

loongson/pypi pydantic-1.9.1-py3-none-any.whl
loongson/pypi pydantic-1.9.0-py3-none-any.whl
loongson/pypi pydantic-1.8.2-py3-none-any.whl
loongson/pypi pydantic-1.7.3-py3-none-any.whl