Bump go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp from 1.38.0 to 1.43.0 in /samples/instrumentation-quickstart/integrationtest

Bump go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp from 1.38.0 to 1.43.0 in /samples/instrumentation-quickstart/integrationtest #25