Update dependency govuk-frontend to v5.8.0 #3222

Job	Run time
Static analysis	1m 31s
Dependencies, Unit tests (18)	1m 59s
Dependencies, Unit tests (20)	1m 59s
Dependencies, Unit tests (22)	2m 0s
Build libraries	2m 27s
Build application (govuk-docs)	2m 22s
Build application (govuk-template)	1m 42s
Build application (next-example)	1m 34s
Build application (remix-example)	1m 18s
Test application (govuk-docs, chromium)	1m 34s
Test application (govuk-docs, firefox)	1m 29s
Test application (govuk-docs, electron)	1m 15s
Test application (govuk-template, chromium)	2m 9s
Test application (govuk-template, firefox)	1m 53s
Test application (govuk-template, electron)	1m 33s
Test application (next-example, chromium)	1m 53s
Test application (next-example, firefox)	1m 30s
Test application (next-example, electron)	1m 16s
Test application (remix-example, chromium)	1m 43s
Test application (remix-example, firefox)	1m 31s
Test application (remix-example, electron)	1m 28s
	36m 6s

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