Bump @testing-library/jest-dom from 5.16.5 to 6.4.8 #2160

Job	Run time
run (admin-ui, lint)	1m 33s
run (admin-ui, test)	1m 15s
run (admin-ui, build)	1m 33s
run (admin-ui, cy:check-types)	1m 5s
run (admin-ui, cy:run-component)	1m 31s
run (account-ui, lint)	1m 20s
run (account-ui, build)	1m 20s
run (@keycloak/keycloak-admin-client, lint)	1m 5s
run (@keycloak/keycloak-admin-client, build)	1m 2s
run (keycloak-masthead, lint)	1m 8s
run (keycloak-masthead, build)	1m 9s
dependabot	0s
	14m 1s

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