root/pypi: links for petstore-sdk

root/pypi petstore-sdk-6.6.6.tar.gz
root/pypi petstore_sdk-6.6.6-py3-none-any.whl
root/pypi petstore-sdk-2.3.8.tar.gz
root/pypi petstore_sdk-2.3.8-py3-none-any.whl