Fix flaky test (#2954)

Author: zoewangg

services/s3/src/test/java/software/amazon/awssdk/services/s3/functionaltests/SelectObjectContentTest.java

@@ -72,7 +72,7 @@ public class SelectObjectContentTest {
     private S3AsyncClient s3;
 
     @Rule
-    public WireMockRule wireMock = new WireMockRule();
+    public WireMockRule wireMock = new WireMockRule(0);
 
     @Before
     public void setup() {