Bump webpack from 5.91.0 to 5.94.0 #569

Job	Run time
CI / Context	1s
CI / Generate matrix	17s
CI / Check governance	0s
CI / 8.1 prf-low mysql57 phpunit all	2m 16s
CI / 8.2 mariadb phpunit all	2m 4s
CI / 8.3 mysql80 phpunit all	2m 14s
CI / 8.1 mysql57 phplinting	1m 40s
CI / 8.1 mysql57 endtoend root job1	6m 31s
CI / 8.3 mysql80 endtoend root job1	6m 9s
CI / 8.1 mysql57 endtoend root job2	5m 23s
CI / 8.3 mysql80 endtoend root job2	5m 18s
CI / 8.1 mysql57 js	4m 4s
CI / Dispatch tag patch release	0s
	35m 57s

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