Bump vaadin.version from 24.7.6 to 24.8.0 (#2481)

Bumps `vaadin.version` from 24.7.6 to 24.8.0.

Updates `com.vaadin:vaadin-bom` from 24.7.6 to 24.8.0

Updates `com.vaadin:vaadin-maven-plugin` from 24.7.6 to 24.8.0
- [Release notes](https://github.com/vaadin/platform/releases)
- [Commits](https://github.com/vaadin/platform/compare/24.7.6...24.8.0)

---
updated-dependencies:
- dependency-name: com.vaadin:vaadin-bom
  dependency-version: 24.8.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: com.vaadin:vaadin-maven-plugin
  dependency-version: 24.8.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

hawkbit-simple-ui/pom.xml

@@ -25,7 +25,7 @@
     <name>hawkBit :: Simple UI</name>
 
     <properties>
-        <vaadin.version>24.7.6</vaadin.version>
+        <vaadin.version>24.8.0</vaadin.version>
     </properties>
 
     <repositories>