Bump vaadin.version from 24.8.5 to 24.8.6 (#2605)

Bumps `vaadin.version` from 24.8.5 to 24.8.6.

Updates `com.vaadin:vaadin-bom` from 24.8.5 to 24.8.6

Updates `com.vaadin:vaadin-maven-plugin` from 24.8.5 to 24.8.6
- [Release notes](https://github.com/vaadin/platform/releases)
- [Commits](https://github.com/vaadin/platform/compare/24.8.5...24.8.6)

---
updated-dependencies:
- dependency-name: com.vaadin:vaadin-bom
  dependency-version: 24.8.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: com.vaadin:vaadin-maven-plugin
  dependency-version: 24.8.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
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>24.8.5</vaadin.version>
+        <vaadin.version>24.8.6</vaadin.version>
     </properties>
 
     <repositories>