Bump com.google.protobuf:protobuf-java #4426

Job	Run time
build	18m 15s
lighty_rnc_app_test / build	6m 49s
lighty_rcgnmi_app_test / build	8m 51s
lighty_rnc_cluster_app_test / build	9m 30s
	43m 25s

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