loongson/pypi: links for flake8-use-fstring

loongson/mirror flake8-use-fstring-1.4.tar.gz
loongson/mirror flake8-use-fstring-1.3.tar.gz
loongson/mirror flake8-use-fstring-1.2.1.tar.gz
loongson/mirror flake8-use-fstring-1.2.tar.gz
loongson/mirror flake8-use-fstring-1.1.tar.gz
loongson/mirror flake8-use-fstring-1.0.tar.gz