Specify the branch for Git dependencies
Specify the branch for Git dependencies

This should address failures in older npm clients. E.g., see
https://github.com/stdlib-js/stdlib/runs/3331109129?check_suite_focus=true

stdlib-js/stdlib,stdlib-js/stdlib,stdlib-js/stdlib,stdlib-js/stdlib,stdlib-js/stdlib,stdlib-js/stdlib,stdlib-js/stdlib,stdlib-js/stdlib