Build

Bump spotbugs:spotbugs-annotations to 4.8.1 #3592

Job	Run time
build	19m 3s
lighty_rcgnmi_app_test / build	8m 2s
lighty_rnc_app_test / build	8m 21s
lighty_rnc_cluster_app_test / build	8m 40s
	44m 6s

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