Bump @testing-library/react from 15.0.5 to 16.0.1 #2218

Job	Run time
run (admin-ui, lint)	1m 57s
run (admin-ui, test)	1m 9s
run (admin-ui, build)	1m 28s
run (admin-ui, cy:check-types)	1m 5s
run (admin-ui, cy:run-component)	1m 32s
run (account-ui, lint)	1m 25s
run (account-ui, build)	1m 21s
run (@keycloak/keycloak-admin-client, lint)	1m 14s
run (@keycloak/keycloak-admin-client, build)	1m 1s
run (keycloak-masthead, lint)	1m 6s
run (keycloak-masthead, build)	1m 12s
dependabot	7s
	14m 37s

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