loongson/pypi: links for sqlitebck

loongson/mirror sqlitebck-1.4.tar.gz
loongson/mirror sqlitebck-1.3.tar.gz
loongson/mirror sqlitebck-1.2.1.tar.gz
loongson/mirror sqlitebck-1.2.tar.gz
loongson/mirror sqlitebck-1.1.tar.gz