add cart dep to example

Author: jenschude

examples/split-packages/pom.xml

@@ -40,6 +40,11 @@
             <artifactId>commercetools-sdk-java-api-models_customer</artifactId>
             <version>${commercetools.version}</version>
         </dependency>
+        <dependency>
+            <groupId>com.commercetools.sdk</groupId>
+            <artifactId>commercetools-sdk-java-api-models_cart</artifactId>
+            <version>${commercetools.version}</version>
+        </dependency>
         <dependency>
             <groupId>com.commercetools.sdk</groupId>
             <artifactId>commercetools-http-client</artifactId>