Using `Config` instead of `process.env` in `NodeSdk` setup

export const NodeSdkLive = NodeSdk.layer(() => ({
  resource: {
    serviceName: 'nextjs',
  },
  spanProcessor: new BatchSpanProcessor(
    new OTLPTraceExporter({
      url: process.env.OTLP_URL,
      headers: {
        Authorization: process.env.OTLP_AUTH,
      },
    })
  ),
}))