fix(tests): Update the expected status on 404. (#12483)

Updates the expected status message for 404 span reflecting the updates
in #12477

Author: onurtemizkan

dev-packages/node-integration-tests/suites/tracing/spans/test.ts

@@ -35,7 +35,7 @@ test('should capture spans for outgoing http requests', done => {
                 description: expect.stringMatching(/GET .*\/api\/v1/),
                 op: 'http.client',
                 origin: 'auto.http.otel.http',
-                status: 'unknown_error',
+                status: 'not_found',
                 data: expect.objectContaining({
                   'http.response.status_code': 404,
                 }),