Move determinate-nixd to /usr/local/bin/determinate-nixd on Linux (#1… #370

Job	Run time
build-aarch64-linux / Build aarch64 Linux (static)	3m 51s
build-aarch64-darwin / Build aarch64 Darwin	3m 55s
build-x86_64-darwin / Build x86_64 Darwin	5m 5s
build-x86_64-linux / Build x86_64 Linux (static)	3m 15s
release	42s
	16m 48s

Provide feedback