Merge pull request #1889 from ZheSun88

* pr/1889:
  Upgrade to Vaadin 24.8.7

Closes gh-1889

Author: mhalbritter

start-site/src/main/resources/application.yml

@@ -171,7 +171,7 @@ initializr:
           - compatibilityRange: "[3.4.0,3.5.0-M1)"
             version: 24.7.11
           - compatibilityRange: "[3.5.0-M1,4.0.0-M1)"
-            version: 24.8.6
+            version: 24.8.7
     platform:
       compatibilityRange: "3.4.0"
   dependencies: