Bump com.vaadin from 24.3.9 to 24.4.12

Bumps com.vaadin from 24.3.9 to 24.4.12.

---
updated-dependencies:
- dependency-name: com.vaadin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

build.gradle.kts

@@ -8,7 +8,7 @@ plugins {
     kotlin("plugin.noarg") version kotlinVersion
     id("com.diffplug.spotless") version "6.25.0"
     id("io.quarkus") version "3.9.2"
-    id("com.vaadin") version "24.3.9"
+    id("com.vaadin") version "24.4.12"
     id("com.adarshr.test-logger") version "4.0.0"
 }