update version to 0.139.0 and fix lint errors

Author: raghu999

exporter/exporterhelper/go.mod

@@ -16,8 +16,8 @@ require (
 	go.opentelemetry.io/collector/consumer/consumererror v0.139.0
 	go.opentelemetry.io/collector/consumer/consumertest v0.139.0
 	go.opentelemetry.io/collector/exporter v1.45.0
-	go.opentelemetry.io/collector/exporter/exportertest v0.138.0
-	go.opentelemetry.io/collector/extension/extensiontest v0.138.0
+	go.opentelemetry.io/collector/exporter/exportertest v0.139.0
+	go.opentelemetry.io/collector/extension/extensiontest v0.139.0
 	go.opentelemetry.io/collector/extension/xextension v0.139.0
 	go.opentelemetry.io/collector/featuregate v1.45.0
 	go.opentelemetry.io/collector/pdata v1.45.0

exporter/exporterhelper/internal/arc/controller_metrics_test.go

@@ -82,7 +82,10 @@ func TestController_BackpressureEmitsMetricsAndShrinks(t *testing.T) {
 	require.True(t, found, "backoff_events not found")
 	require.GreaterOrEqual(t, backoffs, int64(1))
 
-	down := append(common, attribute.String("direction", "down"))
+	down := make([]attribute.KeyValue, len(common)+1)
+	copy(down, common)
+	down[len(common)] = attribute.String("direction", "down")
+
 	found, downs := findSum(rm, "otelcol_exporter_arc_limit_changes", down)
 	require.True(t, found, "limit_changes{down} not found")
 	require.GreaterOrEqual(t, downs, int64(1))