Explicitly set the `SHELL` variable
Explicitly set the `SHELL` variable

See:

https://www.gnu.org/prep/standards/html_node/Makefile-Basics.html#Makefile-Basics

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