chore: fix lint breaking build (#25916)

pkg/tsdb/azuremonitor/applicationinsights-metrics_test.go

@@ -104,6 +104,7 @@ func TestInsightsMetricsResultToFrame(t *testing.T) {
 		},
 	}
 	for _, tt := range tests {
+		tt := tt
 		t.Run(tt.name, func(t *testing.T) {
 			res, err := loadInsightsMetricsResponse(tt.testFile)
 			require.NoError(t, err)