fix: test assertion

Author: Justintime50

src/main/java/com/easypost/model/LumaInfo.java

@@ -8,4 +8,5 @@ public final class LumaInfo {
     private List<AiResults> aiResults;
     private Integer matchingRuleIdx;
     private String rulesetDescription;
+    private Rate lumaSelectedRate;
 }

src/test/java/com/easypost/LumaTest.java

@@ -37,6 +37,6 @@ public void testGetPromise() throws EasyPostException {
 
         LumaInfo response = vcr.client.luma.getPromise(shipmentData);
 
-        assertNotNull(response.getRulesetDescription());
+        assertNotNull(response.getLumaSelectedRate());
     }
 }