Add livemode as a field in ThinEvent

src/main/java/com/stripe/model/ThinEvent.java

@@ -24,11 +24,19 @@ public class ThinEvent {
   @SerializedName("created")
   public Instant created;
 
+  /** Livemode indicates if the event is from a production(true) or test(false) account.  */
+  @SerializedName("livemode")
+  public Boolean livemode;
+
   /** [Optional] Authentication context needed to fetch the event or related object. */
   @SerializedName("context")
   public String context;
 
   /** [Optional] Object containing the reference to API resource relevant to the event. */
   @SerializedName("related_object")
   public ThinEventRelatedObject relatedObject;
+
+  /** [Optional] Reason for the event. */
+  @SerializedName("reason")
+  public com.stripe.model.v2.Event.Reason reason;
 }

src/test/java/com/stripe/StripeClientTest.java

@@ -151,6 +151,7 @@ public void failsWebhookVerification()
           + "  \"id\": \"evt_234\",\n"
           + "  \"object\": \"event\",\n"
           + "  \"type\": \"financial_account.balance.opened\",\n"
+          + "  \"livemode\": \"false\",\n"
           + "  \"created\": \"2022-02-15T00:27:45.330Z\",\n"
           + "  \"context\": \"context 123\",\n"
           + "  \"related_object\": {\n"
@@ -166,6 +167,7 @@ public void failsWebhookVerification()
           + "  \"id\": \"evt_234\",\n"
           + "  \"object\": \"event\",\n"
           + "  \"type\": \"financial_account.balance.opened\",\n"
+          + "  \"livemode\": \"false\",\n"
           + "  \"created\": \"2022-02-15T00:27:45.330Z\"\n"
           + "}";