workflows: Install pre-commit before committing FAQ changes #2769

Job	Run time
run-install-script (ubuntu-latest, sudo ./install-photobooth.sh --username="$(whoami)" --branch="...	3m 17s
run-install-script (ubuntu-latest, sudo ./install-photobooth.sh --username="$(whoami)" --silent)	3m 59s
check-install-script	19s
	7m 35s

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