Bump @clr/ui from 15.8.0 to 15.9.0 in /dashboard #2229

Job	Run time
CI / setup	1s
CI / test_dashboard	4m 42s
CI / test_pinniped_proxy	2m 10s
CI / test_go	4m 37s
CI / Build dashboard image	8m 18s
CI / Build apprepository-controller image	4m 55s
CI / Build asset-syncer image	3m 43s
CI / Build kubeapps-apis image	2m 8s
CI / Build pinniped-proxy image	5m 52s
CI / Build E2E runner image	9m 22s
CI / test_chart_render	24s
CI / sync_chart_from_bitnami	0s
CI / linters / golang-linter	4m 48s
CI / linters / license-headers-linter	1m 3s
CI / linters / yaml-linter	9s
CI / linters_result	1s
CI / push_dev_images	4m 19s
CI / local_e2e_tests (carvel)	7m 57s
CI / local_e2e_tests (flux)	9m 5s
CI / local_e2e_tests (main)	13m 37s
CI / local_e2e_tests (multicluster)	9m 26s
CI / local_e2e_tests (multicluster-nokubeapps)	8m 9s
CI / local_e2e_tests (operator)	11m 40s
CI / gke_setup	0s
CI / GKE_STABLE_VERSION	0s
CI / GKE_REGULAR_VERSION	0s
CI / local_e2e_tests_result	1s
CI / sync_chart_to_bitnami	0s
CI / push_images	0s
CI / release	0s
CI / srp_report	0s
	1h 56m 27s

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