update libexec for pkgx^2 #374

Job	Run time
build (ubuntu-latest, linux, x86-64)	1m 17s
id	1m 23s
build (macos-latest, darwin, aarch64)	1m 0s
unavailable	17s
audit (ubuntu-latest)	22s
bottle (xz, darwin+aarch64)	16s
bottle (gz, linux+x86-64)	18s
bottle (gz, darwin+aarch64)	15s
test	16s
test (darwin+aarch64)	17s
audit (macos-latest)	21s
bottle (xz, linux+x86-64)	15s
	6m 17s

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