Bump `os-lib` to 0.9.3 #95

Job	Run time
test	1m 14s
generate-mostly-static-launcher	8m 48s
generate-static-launcher	6m 21s
generate-launchers (ubuntu-20.04)	6m 9s
publish	0s
generate-launchers (windows-latest)	7m 26s
generate-launchers (macos-latest)	7m 59s
	37m 57s

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