loongson/pypi: links for ruamel-std-warnings

loongson/mirror ruamel.std.warnings-0.3.0.tar.gz
loongson/mirror ruamel.std.warnings-0.3.0-py3-none-any.whl
loongson/mirror ruamel.std.warnings-0.2.2.tar.gz
loongson/mirror ruamel.std.warnings-0.2.2-py3-none-any.whl