Bump cross-spawn from 7.0.3 to 7.0.6 #1152

Job	Run time
CI / Generate matrix	17s
CI / Context	1s
CI / Check governance	0s
CI / 8.1 prf-low mysql57 phpunit all	2m 50s
CI / 8.2 mariadb phpunit all	2m 51s
CI / 8.3 mysql80 phpunit all	3m 4s
CI / 8.3 mysql84 phpunit all	3m 3s
CI / 8.1 mysql57 phplinting	2m 5s
CI / 8.1 mysql57 endtoend root job1	8m 42s
CI / 8.3 mysql80 endtoend root job1	8m 37s
CI / 8.1 mysql57 endtoend root job2	8m 32s
CI / 8.3 mysql80 endtoend root job2	8m 0s
CI / 8.1 mysql57 endtoend root job3	9m 19s
CI / 8.3 mysql80 endtoend root job3	9m 32s
CI / 8.1 mysql57 endtoend root job4	9m 8s
CI / 8.3 mysql80 endtoend root job4	9m 14s
CI / 8.1 mysql57 endtoend root job5	6m 17s
CI / 8.3 mysql80 endtoend root job5	6m 44s
CI / 8.1 mysql57 endtoend root job6	7m 51s
CI / 8.3 mysql80 endtoend root job6	7m 48s
CI / 8.1 mysql57 endtoend root job7	11m 35s
CI / 8.3 mysql80 endtoend root job7	11m 31s
CI / 8.1 mysql57 js	4m 22s
CI / 8.1 mysql57 doclinting	3m 17s
CI / Dispatch tag patch release	0s
	2h 24m 40s

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