Accept payload config on SubscriptionCancel Event

This goes along with the changes in #168. At the time, I just missed this one.

[Semantic versioning](https://semver.org/) says this change would bump the version to `1.6.1`.

pom.xml

@@ -17,7 +17,7 @@
     <groupId>com.appdirect</groupId>
     <artifactId>service-integration-sdk</artifactId>
     <packaging>jar</packaging>
-    <version>1.61-SNAPSHOT</version>
+    <version>1.62-SNAPSHOT</version>
     <name>SDK for service integration</name>
 
     <properties>

src/main/java/com/appdirect/sdk/appmarket/events/SubscriptionCancel.java

@@ -13,6 +13,7 @@
 
 package com.appdirect.sdk.appmarket.events;
 
+import java.util.HashMap;
 import java.util.Map;
 
 import lombok.EqualsAndHashCode;
@@ -25,17 +26,30 @@
 @Getter
 @EqualsAndHashCode(callSuper = true)
 @NoArgsConstructor
-public class SubscriptionCancel extends EventWithContext {
+public class SubscriptionCancel extends EventWithContextWithConfiguration {
 	private String accountIdentifier;
 
 	public SubscriptionCancel(String consumerKeyUsedByTheRequest,
 							  String accountIdentifier,
 							  Map<String, String[]> queryParameters,
 							  EventFlag flag,
 							  String eventToken,
-							  String marketplaceUrl) {
+							  String marketplaceUrl,
+							  Map<String, String> configuration) {
 
-		super(consumerKeyUsedByTheRequest, queryParameters, flag, eventToken, marketplaceUrl);
+		super(consumerKeyUsedByTheRequest, queryParameters, flag, eventToken, marketplaceUrl, configuration);
 		this.accountIdentifier = accountIdentifier;
 	}
+
+	@Deprecated
+	public SubscriptionCancel(String consumerKeyUsedByTheRequest,
+							  String accountIdentifier,
+							  Map<String, String[]> queryParameters,
+							  EventFlag flag,
+							  String eventToken,
+							  String marketplaceUrl) {
+
+		this(consumerKeyUsedByTheRequest, accountIdentifier, queryParameters,
+		    flag, eventToken, marketplaceUrl, new HashMap<>());
+	}
 }