Update dependency @glimmer/validator to v0.94.6 #1420

Job	Run time
test bundlesize	1m 25s
lint	50s
test against additional browser in BrowserStack	1m 56s
Test php backend (7.2)	24s
Test php backend (7.3)	26s
test against Chrome	2m 9s
test CSP in .htaccess	47s
Test php backend (7.4)	17s
test against Firefox	1m 2s
Test php backend (8.0)	14s
Test php backend (8.1)	15s
Test php backend (8.2)	14s
Test php backend (8.3)	18s
	10m 17s

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