Update dependency @testing-library/user-event to ^14.6.1 #3186

Job	Run time
Dependencies, Unit tests (18)	1m 59s
Dependencies, Unit tests (20)	2m 0s
Static analysis	1m 27s
Dependencies, Unit tests (22)	1m 48s
Build application (govuk-docs)	2m 21s
Build libraries	2m 22s
Build application (govuk-template)	1m 46s
Build application (next-example)	1m 33s
Build application (remix-example)	1m 19s
Test application (govuk-docs, chromium)	2m 14s
Test application (govuk-docs, firefox)	1m 43s
Test application (govuk-docs, electron)	1m 16s
Test application (govuk-template, chromium)	1m 54s
Test application (govuk-template, firefox)	1m 47s
Test application (govuk-template, electron)	1m 38s
Test application (next-example, chromium)	2m 0s
Test application (next-example, firefox)	1m 46s
Test application (next-example, electron)	1m 27s
Test application (remix-example, chromium)	1m 47s
Test application (remix-example, firefox)	1m 59s
Test application (remix-example, electron)	1m 33s
	37m 39s

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