Bump @rollup/plugin-node-resolve from 15.0.1 to 16.0.0 #2433

Job	Run time
run (admin-ui, lint)	1m 59s
run (admin-ui, test)	1m 21s
run (admin-ui, build)	1m 29s
run (admin-ui, cy:check-types)	1m 6s
run (admin-ui, cy:run-component)	1m 25s
run (account-ui, lint)	1m 24s
run (account-ui, build)	1m 20s
run (@keycloak/keycloak-admin-client, lint)	1m 15s
run (@keycloak/keycloak-admin-client, build)	1m 6s
run (keycloak-masthead, lint)	1m 10s
run (keycloak-masthead, build)	1m 8s
dependabot	4s
	14m 47s

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