Update mozjs_sys package name #11

Job	Run time
android	1m 12s
linux (--features debugmozjs)	41s
integrity	45s
linux	40s
linux (aarch64-unknown-linux-gnu)	1m 16s
linux (armv7-unknown-linux-gnueabihf)	1m 0s
mac (--features debugmozjs)	2m 10s
mac	2m 37s
windows (--features debugmozjs, x86_64-pc-windows-msvc)	1m 44s
windows (--features debugmozjs, aarch64-pc-windows-msvc)	2m 10s
windows (x86_64-pc-windows-msvc)	1m 51s
windows (aarch64-pc-windows-msvc)	1m 40s
Result	3s
	17m 49s

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