Bump cross-spawn from 7.0.3 to 7.0.6 (#343) #562

Job	Run time
CI / Generate matrix	13s
CI / Context	1s
CI / Check governance	1s
CI / 8.1 prf-low mysql57 phpunit all	2m 8s
CI / 8.2 mariadb phpunit all	1m 46s
CI / 8.3 mysql80 phpunit all	2m 7s
CI / 8.3 mysql84 phpunit all	1m 38s
CI / 8.1 mysql57 phplinting	1m 37s
CI / 8.1 mysql57 endtoend root	5m 6s
CI / 8.3 mysql80 endtoend root	5m 32s
CI / 8.1 mysql57 js	3m 37s
CI / Dispatch tag patch release	2s
	23m 48s

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