loongson/pypi: links for requests

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

loongson/pypi requests-2.28.1.tar.gz
loongson/pypi requests-2.28.1-py3-none-any.whl
loongson/pypi requests-2.27.1-py2.py3-none-any.whl
loongson/pypi requests-2.26.0-py2.py3-none-any.whl
loongson/pypi requests-2.25.1-py2.py3-none-any.whl
loongson/pypi requests-2.23.0-py2.py3-none-any.whl
loongson/pypi requests-2.21.0-py2.py3-none-any.whl