DEVX-496 update spring-datadog-statsd example

Author: lojzatran

examples/spring-datadog-statsd/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id 'org.springframework.boot' version '3.0.4'
+    id 'org.springframework.boot' version '3.4.0'
     id 'io.spring.dependency-management' version '1.1.0'
 }
 

examples/spring-datadog-statsd/src/main/java/com/commercetools/sdk/examples/springmvc/web/AppController.java

@@ -42,9 +42,9 @@ public String pop(Model model, HttpSession session) throws ExecutionException, I
     }
 
     @GetMapping("/cart")
-    public String cart(Model model, HttpSession session) {
+    public String cart(Model model, HttpSession session) throws ExecutionException, InterruptedException {
         final CompletableFuture<Cart> cart = new CartRepository(apiRoot, session).meCart();
-        model.addAttribute("cart", cart);
+        model.addAttribute("cart", cart.get());
         return "mycart/index";
     }